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Bérubé M, Verret M, Bourque L, Côté C, Guénette L, Richard-Denis A, Ouellet S, Singer LN, Gauthier L, Gagnon MP, Gagnon MA, Martorella G. Educational needs and preferences of adult patients with acute pain: a mixed-methods systematic review. Pain 2024:00006396-990000000-00630. [PMID: 38888742 DOI: 10.1097/j.pain.0000000000003288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 04/28/2024] [Indexed: 06/20/2024]
Abstract
ABSTRACT Many patients experience acute pain, which has been associated with numerous negative consequences. Pain education has been proposed as a strategy to improve acute pain management. However, studies report limited effects with educational interventions for acute pain in adults, which can be explained by the underuse of the person-centered approach. Thus, we aimed to systematically review and synthetize current evidence from quantitative, qualitative and mixed-methods studies describing patients' needs and preferences for acute pain education in adults. We searched original studies and gray literature in 7 databases, from January 1990 to October 2023. Methodological quality was assessed with the Mixed Methods Appraisal Tool. A total of 32 studies were included (n = 1847 patients), two-thirds of which were qualitative studies of high methodological quality. Most of the studies were conducted over the last 15 years in patients with postsurgical and posttraumatic pain, identified as White, with a low level of education. Patients expressed the greatest need for education when it came to what to expect in pain intensity and duration, as well how to take the medication and its associated adverse effects. The most frequently reported educational preferences were for in-person education while involving caregivers and to obtain information first from physicians, then by other professionals. This review has highlighted the needs and preferences to be considered in pain education interventions, which should be embedded in an approach cultivating communication and partnership with patients and their caregivers. The results still need to be confirmed with different patient populations.
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Affiliation(s)
- Mélanie Bérubé
- Population Health and Optimal Practices Research Unit, Research Centre of the CHU de Québec-Université Laval, Quebec City, QC, Canada
- Faculty of Nursing, Université Laval, Quebec City, QC, Canada
- Quebec Pain Research Network, Sherbrooke, QC, Canada
| | - Michael Verret
- Population Health and Optimal Practices Research Unit, Research Centre of the CHU de Québec-Université Laval, Quebec City, QC, Canada
- Faculty of Medicine, Clinical Epidemiology Program, University of Ottawa, Ottawa, ON, Canada
- Department of Anesthesiology and Critical Care Medicine, Université Laval, Quebec City, QC, Canada
| | - Laurence Bourque
- Population Health and Optimal Practices Research Unit, Research Centre of the CHU de Québec-Université Laval, Quebec City, QC, Canada
| | - Caroline Côté
- Population Health and Optimal Practices Research Unit, Research Centre of the CHU de Québec-Université Laval, Quebec City, QC, Canada
- Faculty of Nursing, Université Laval, Quebec City, QC, Canada
| | - Line Guénette
- Population Health and Optimal Practices Research Unit, Research Centre of the CHU de Québec-Université Laval, Quebec City, QC, Canada
- Quebec Pain Research Network, Sherbrooke, QC, Canada
- Faculty of Pharmacy, Université Laval, Québec, QC, Canada
| | - Andréane Richard-Denis
- Department of Medicine, Université de Montréal, Montréal, QC, Canada
- Research Centre, CIUSSS du Nord-de-l'île-de-Montréal, Montréal, QC, Canada
| | - Simon Ouellet
- Population Health and Optimal Practices Research Unit, Research Centre of the CHU de Québec-Université Laval, Quebec City, QC, Canada
- Faculty of Nursing, Université Laval, Quebec City, QC, Canada
- Department of Health Sciences, Université du Québec à Rimouski, Rimouski, QC, Canada
| | - Lesley Norris Singer
- Quebec Pain Research Network, Sherbrooke, QC, Canada
- School of Physical and Occupational Therapy, McGill University, Montréal, QC, Canada
| | - Lynn Gauthier
- Population Health and Optimal Practices Research Unit, Research Centre of the CHU de Québec-Université Laval, Quebec City, QC, Canada
- Quebec Pain Research Network, Sherbrooke, QC, Canada
- Department of Family and Emergency Medicine, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
- VITAM-Centre de Recherche en Santé durable, Université Laval, Québec, QC, Canada
- Oncology Division, Research Centre of the CHU de Québec-Université Laval, Quebec City, QC, Canada
- Cancer Research Centre, Université Laval, Québec City, QC, Canada
| | - Marie-Pierre Gagnon
- Population Health and Optimal Practices Research Unit, Research Centre of the CHU de Québec-Université Laval, Quebec City, QC, Canada
- Faculty of Nursing, Université Laval, Quebec City, QC, Canada
- VITAM-Centre de Recherche en Santé durable, Université Laval, Québec, QC, Canada
| | - Marc-Aurèle Gagnon
- Population Health and Optimal Practices Research Unit, Research Centre of the CHU de Québec-Université Laval, Quebec City, QC, Canada
| | - Géraldine Martorella
- College of Nursing, Florida State University, Tallahassee, FL, United States
- Florida State University Brain Science and Symptom Management Center, Tallahassee, FL, United States
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Slater R, Eccleston C, Williams A, Vincent K, Linde M, Hurley M, Laughey W. Reframing pain: the power of individual and societal factors to enhance pain treatment. Pain Rep 2024; 9:e1161. [PMID: 38655237 PMCID: PMC11037735 DOI: 10.1097/pr9.0000000000001161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 01/27/2024] [Indexed: 04/26/2024] Open
Abstract
The effectiveness of analgesics can be increased if synergistic behavioural, psychological, and pharmacological interventions are provided within a supportive environment.
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Affiliation(s)
- Rebeccah Slater
- Department of Paediatrics, University of Oxford, Oxford, United Kingdom
| | | | - Amanda Williams
- Research Department of Clinical, Educational & Health Psychology, University College London, London, United Kingdom
| | - Katy Vincent
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, United Kingdom
| | - Mattias Linde
- Norwegian Centre for Headache Research (NorHEAD), Trondheim, Norway
- Regional Migraine Unit, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Michael Hurley
- Population Health Research Institute, St George's University of London, London, United Kingdom
| | - William Laughey
- Health Professions Education Unit, Hull York Medical School, University of York, York, United Kingdom
- Reckitt Benckiser Healthcare Ltd, Dansom Lane South, Kingston Upon Hull, United Kingdom
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Wilhelm M, Hermann C, Rief W, Schedlowski M, Bingel U, Winkler A. Working with patients' treatment expectations - what we can learn from homeopathy. Front Psychol 2024; 15:1398865. [PMID: 38860049 PMCID: PMC11163137 DOI: 10.3389/fpsyg.2024.1398865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 05/13/2024] [Indexed: 06/12/2024] Open
Abstract
The usual homeopathic remedy, "globules," does not contain any pharmacologically active ingredient. However, many patients and practitioners report beneficial effects of homeopathic treatment on various health outcomes. Experimental and clinical research of the last two decades analyzing the underlying mechanisms of the placebo effect could explain this phenomenon, with patients' treatment expectations as the predominant mechanism. Treatment expectations can be optimized through various factors, such as prior information, communication, and treatment context. This narrative review analyses how homeopathy successfully utilizes these factors. Subsequently, it is discussed what evidence-based medicine could learn from homeopathic practice to optimize treatment expectations (e.g., using an empathic, patient-centered communication style, deliberately selecting objects in practice rooms, or using clear treatment rituals and salient contextual stimuli) and thereby treatment effectiveness. Homeopathic remedy does not work beyond the placebo effect but is recommended or prescribed as an active treatment by those who believe in it. Thus, practitioners need to understand the manner in which homeopathy (as an example of inert treatment) works and are advised to reintegrate its underlying effective placebo mechanisms into evidence-based medicine. This promises to increase treatment efficacy, tolerability, satisfaction, and compliance with evidence-based treatments, and addresses the desires patients are trying to satisfy in homeopathy in an ethical, fully informed way that is grounded in evidence-based medicine.
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Affiliation(s)
- Marcel Wilhelm
- Department of Clinical Psychology, Philipps-University Marburg, Marburg, Germany
| | - Christiane Hermann
- Department of Clinical Psychology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Winfried Rief
- Department of Clinical Psychology, Philipps-University Marburg, Marburg, Germany
| | - Manfred Schedlowski
- Institute of Medical Psychology and Behavioral Immunobiology, University Clinic Essen, Essen, Germany
- Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Ulrike Bingel
- Department of Neurology, Center for Translational Neuro-and Behavioral Sciences, University Medicine Essen, Essen, Germany
- Translational Pain Research Unit, University Medicine Essen, Essen, Germany
| | - Alexander Winkler
- Department of Clinical Psychology, Justus-Liebig-University Giessen, Giessen, Germany
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Szigeti B, Heifets BD. Expectancy Effects in Psychedelic Trials. BIOLOGICAL PSYCHIATRY. COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2024; 9:512-521. [PMID: 38387698 DOI: 10.1016/j.bpsc.2024.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 02/24/2024]
Abstract
Clinical trials of psychedelic compounds like psilocybin, lysergic acid diethylamide (LSD), and N,N-dimethyltrptamine (DMT) have forced a reconsideration of how nondrug factors, such as participant expectations, are measured and controlled in mental health research. As doses of these profoundly psychoactive substances increase, so does the difficulty in concealing the treatment condition in the classic double-blind, placebo-controlled trial design. As widespread public enthusiasm for the promise of psychedelic therapy grows, so do questions regarding whether and how much trial results are biased by positive expectancy. First, we review the key concepts related to expectancy and its measurement. Then, we review expectancy effects that have been reported in both micro- and macrodose psychedelic trials from the modern era. Finally, we consider expectancy as a discrete physiological process that can be independent of, or even interact with, the drug effect. Expectancy effects can be harnessed to improve treatment outcomes and can also be actively managed in controlled studies to enhance the rigor and generalizability of future psychedelic trials.
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Affiliation(s)
- Balázs Szigeti
- Translational Psychedelic Research Program, University of California San Francisco, San Francisco, California; Centre for Psychedelic Research, Imperial College London, London, UK
| | - Boris D Heifets
- Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, California; Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, California.
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Krahé C, Koukoutsakis A, Fotopoulou A. Updating beliefs about pain following advice: Trustworthiness of social advice predicts pain expectations and experience. Cognition 2024; 246:105756. [PMID: 38442585 PMCID: PMC7616089 DOI: 10.1016/j.cognition.2024.105756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 02/09/2024] [Accepted: 02/20/2024] [Indexed: 03/07/2024]
Abstract
Prior expectations influence pain experience. These expectations, in turn, rely on prior pain experience, but they may also be socially influenced. Yet, most research has focused on self rather than social expectations about pain, and hardly any studies examined their combined effects on pain. Here, we adopted a Bayesian learning perspective to investigate how explicitly communicated social expectations ('advice about pain tolerance') affect own pain expectations, and ultimately pain tolerance, under varying conditions of social epistemic uncertainty (trustworthiness of the advice). N = 72 female participants took part in a coldpressor (cold water) task before (self-learning baseline) and after (socially-influenced learning) receiving advice about their likely pain tolerance from a confederate, the trustworthiness of whom was experimentally manipulated. We used path analysis to test the hypothesis that social advice from a highly trustworthy confederate would influence participants' expectations about pain more than advice from a less trustworthy source, and that the degree of this social influence would in turn predict pain tolerance. We further used a simplified, Bayesian learning, computational approach for explicit belief updating to examine the role of latent parameters of precision optimisation in how participants subsequently changed their future pain expectations (prospective posterior beliefs) based on the combined effect of the confederate's advice on their own pain expectations, and their own task experience. Results confirmed that participants adjusted their pain expectations towards the confederate's advice more in the high- vs. low-trustworthiness condition, and this advice taking predicted their pain tolerance. Furthermore, the confederate's trustworthiness influenced how participants weighted the confederate's advice in relation to their own expectations and task experience in forming prospective posterior beliefs. When participants received advice from a less trustworthy confederate, their own sensory experience was weighted more highly than their socially-influenced prior expectations. Thus, explicit social advice appears to impact pain by influencing one's own pain expectations, but low social trustworthiness leads to these expectations becoming more malleable to novel, sensory learning.
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Affiliation(s)
- Charlotte Krahé
- Department of Psychology, Institute of Psychiatry, Psychology, and Neuroscience, King's College London, London, United Kingdom.
| | - Athanasios Koukoutsakis
- Research Department of Clinical, Educational and Health Psychology, University College London, London, United Kingdom
| | - Aikaterini Fotopoulou
- Research Department of Clinical, Educational and Health Psychology, University College London, London, United Kingdom
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Klauß H, Kunkel A, Müßgens D, Haaker J, Bingel U. Learning by observing: a systematic exploration of modulatory factors and the impact of observationally induced placebo and nocebo effects on treatment outcomes. Front Psychol 2024; 15:1293975. [PMID: 38699574 PMCID: PMC11064928 DOI: 10.3389/fpsyg.2024.1293975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 03/26/2024] [Indexed: 05/05/2024] Open
Abstract
Introduction Observational learning (OL) refers to learning through observing other people's behavior. OL has been suggested as an effective and simple tool to evoke treatment expectations and corresponding placebo and nocebo effects. However, the exact mechanisms by which OL shapes treatment outcomes, its moderating factors and possible areas of application remain unclear. We thus reviewed the existing literature with two different literature searches to answer the following questions: Which influencing factors contribute to OL-induced placebo and nocebo effects (in healthy volunteers and patients) and how large are these effects (search 1)? In which medical fields has OL been used so far to modulate treatment expectancy and treatment outcomes in patients, their caregivers, and at-risk groups (search 2)? We also aimed to explore whether and how the assessment of treatment expectations has been incorporated. Methods We conducted two independent and comprehensive systematic literature searches, both carried out on September 20, 2022. Results We identified 21 studies that investigated OL-mediated placebo and nocebo effects for pain and itch, the (placebo) efficacy of sham treatment on anxiety, and the (nocebo) induction of medication side effects (search 1). Studies showed that OL can efficiently induce placebo and nocebo effects across different presentation modes, with medium effect sizes on average: placebo effects, d = 0.79 (range: d = -0.36-1.58), nocebo effects, d = 0.61 (range: d = 0.04-1.5). Although several moderating factors have been investigated, their contribution to OL-induced effects remains unclear because of inconsistent results. Treatment expectation was assessed in only four studies. Regarding medical applications of OL (search 2), we found 12 studies. They showed that OL was effectively applied in preventive, therapeutic and rehabilitative interventions and that it was mainly used in the field of psychosomatics. Discussion OL effects on treatment outcomes can be both positive and negative. Future research should investigate which individuals would benefit most from OL and how OL can be implemented most effectively to induce placebo and avoid nocebo effects in clinical settings. Systematic review registration This work was preregistered at the Center for Open Science as open-ended registration (doi: 10.17605/OSF.IO/FVHKE). The protocol can be found here: https://archive.org/details/osf-registrations-fvhke-v1.
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Affiliation(s)
- Helena Klauß
- Department of Neurology, Center for Translational Neuro-and Behavioral Sciences (C-TNBS), University Medicine Essen, University of Duisburg-Essen, Essen, Germany
| | - Angelika Kunkel
- Department of Neurology, Center for Translational Neuro-and Behavioral Sciences (C-TNBS), University Medicine Essen, University of Duisburg-Essen, Essen, Germany
| | - Diana Müßgens
- Department of Neurology, Center for Translational Neuro-and Behavioral Sciences (C-TNBS), University Medicine Essen, University of Duisburg-Essen, Essen, Germany
| | - Jan Haaker
- Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ulrike Bingel
- Department of Neurology, Center for Translational Neuro-and Behavioral Sciences (C-TNBS), University Medicine Essen, University of Duisburg-Essen, Essen, Germany
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May A, Carvalho GF, Schwarz A, Basedau H. Influence of Role Expectancy on Patient-Reported Outcomes Among Patients With Migraine: A Randomized Clinical Trial. JAMA Netw Open 2024; 7:e243223. [PMID: 38656579 PMCID: PMC11043898 DOI: 10.1001/jamanetworkopen.2024.3223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 01/27/2024] [Indexed: 04/26/2024] Open
Abstract
Importance It is usually assumed that an individual's classification as a patient or a healthy person is determined by the presence or absence of disease, but little is known about whether the mere awareness of being a patient or a healthy control can play an important role for reporting outcomes. Objective To investigate whether assignment to the role of a patient or a healthy control has an effect on patient-reported outcomes. Design, Setting, and Participants This single center, double-blind, 3-group randomized clinical trial included consecutive patients from a tertiary headache clinic based at a single center in Germany who were invited to participate between October 2019 and June 2023. Statistical analysis was performed from January to March 2024. Intervention Patients with migraine were randomized into 2 groups. The first group was told that this study was centered on migraine symptoms, whereas the second group was told that healthy controls were being sought for a study about patients with vertigo. A third group of age- and sex-matched headache-free participants served as controls. All participants viewed 2 standardized roller coaster videos and provided ratings of their perceived levels of motion sickness and dizziness. Main Outcomes and Measures The primary outcome was self-reported vestibular symptoms. Secondary outcomes included differences in motion sickness, headache burden, and migraine disability. Outcomes were assessed using standardized questionnaires. Results The final sample included 366 participants: 122 patients with migraine assigned the role of patient (MP) (migraine as patient): mean [SD] age, 37.56 [12.93] years; 105 [86.1%] female), 122 patients with migraine assigned the role of healthy participant (MH) (migraine as healthy): mean [SD] age, 37.03 [13.10] years; 107 [87.7%] female), and 122 headache-free controls (HC): mean [SD] age, 37.55 [11.56] years; 100 [82.0%] female). The assigned role of the individuals with migraine (MP vs MH) had a significant effect on self-disclosure of (1) estimation that symptoms (dizziness) will occur under specific conditions (self-reported vestibular symptoms: 79 MP [64.8%]; 29 MH [23.8%]; 9 HC [7.4%]; P < .001), (2) the increase of such symptoms (dizziness) after viewing the roller coaster video, and (3) the reported frequency (median [IQR] self-reported monthly headache days for MP: 7 [4-15] days; for MH: 5 [2-10] days; P = .008) and severity (median [IQR] migraine disability assessment score for MP: 35 [20-64] points; for MH: 25 [11-47] points; P = .005) of migraine symptoms. Statistically significant changes were also found for self-reported headache frequency and disability caused by migraine. Conclusions and Relevance This randomized clinical trial found an effect of expectations regarding the role of a patient with respect to clinical and study outcomes. These findings suggest that role expectations should be taken into account when, for example, invasive treatments are discussed. Trial Registration ClinicalTrials.gov Identifier: NCT06322550.
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Affiliation(s)
- Arne May
- Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gabriela F. Carvalho
- Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Now with Department of Physiotherapy, Faculty of Health, Safety and Society, Furtwangen University, Furtwangen, Germany
| | - Annika Schwarz
- Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Now with Faculty of Social Sciences, University of Applied Sciences Bremen, Bremen, Germany
| | - Hauke Basedau
- Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Wiech K, Bingel U. Alzheimer disease may compromise patients' ability for expectancy-based pain modulation. Now what? Pain 2024; 165:256-257. [PMID: 37703398 PMCID: PMC10785054 DOI: 10.1097/j.pain.0000000000003036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 07/18/2023] [Indexed: 09/15/2023]
Affiliation(s)
- Katja Wiech
- Wellcome Centre for Integrative Neuroimaging (WIN), Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
| | - Ulrike Bingel
- Department of Neurology, Center for Translational Neuro- and Behavioural Sciences, University Hospital Essen, Essen, Germany
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Basedow LA, Zerth SF, Salzmann S, Uecker C, Bauer N, Elsenbruch S, Rief W, Langhorst J. Pre-treatment expectations and their influence on subjective symptom change in Crohn's disease. J Psychosom Res 2024; 176:111567. [PMID: 38100897 DOI: 10.1016/j.jpsychores.2023.111567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 12/07/2023] [Accepted: 12/09/2023] [Indexed: 12/17/2023]
Abstract
BACKGROUND Treatment expectations reportedly shape treatment outcomes, but have not been studied in the context of multimodal therapy in Crohn's disease (CD). Therefore, the current study investigated the role of treatment expectations for subjective symptom changes in CD patients who have undergone an integrative multimodal therapy program. METHODS Validated questionnaires were completed at the start of the treatment program and post intervention. Pre-treatment expectations and experienced symptom change were assessed with the Generic Rating Scale for Previous Treatment Experiences, Treatment Expectations, and Treatment Effects (GEEE); stress levels were quantified with the Perceived Stress Scale (PSS-10) and disease specific quality of life was quantified with the disease-specific Inflammatory Bowel Disease Questionnaire (IBDQ). We performed multiple linear and Bayesian regression to determine how expectations related to symptom change. RESULTS N = 71 CD patients (66.2% female) were included. Stronger expectations regarding symptom improvement (b = 0.422, t = 3.70, p < .001) were associated with higher experienced symptom improvement. Additionally, Bayesian analysis provided strong evidence for including improvement expectations as a predictor of improvement experience (BFinclusion = 13.78). CONCLUSIONS In line with research in other disorders, we found that positive treatment expectations were associated with experienced symptom improvement. In contrast, we found no indication that an experience of symptom worsening was associated with positive or negative baseline treatment expectations. Induction of positive expectations might be a potential avenue for improving treatment outcomes in CD therapy.
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Affiliation(s)
- Lukas Andreas Basedow
- Philipps-Universität Marburg, Department of Clinical Psychology and Psychotherapy, 35037 Marburg, Germany.
| | - Simon Felix Zerth
- Philipps-Universität Marburg, Department of Clinical Psychology and Psychotherapy, 35037 Marburg, Germany.
| | - Stefan Salzmann
- Philipps-Universität Marburg, Department of Clinical Psychology and Psychotherapy, 35037 Marburg, Germany; Health and Medical University, Medical Psychology, 99084 Erfurt, Germany.
| | - Christine Uecker
- Sozialstiftung Bamberg, Department of Internal and Integrative Medicine, 96049 Bamberg, Germany; University of Duisburg Essen, Medicinal Faculty, Department of Integrative Medicine, 96049 Bamberg, Germany.
| | - Nina Bauer
- Sozialstiftung Bamberg, Department of Internal and Integrative Medicine, 96049 Bamberg, Germany; University of Duisburg Essen, Medicinal Faculty, Department of Integrative Medicine, 96049 Bamberg, Germany
| | - Sigrid Elsenbruch
- Department of Medical Psychology and Medical Sociology, Ruhr University Bochum, 44789 Bochum, Germany; Department of Neurology, Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, University of Duisburg-Essen, 45122 Essen, Germany.
| | - Winfried Rief
- Philipps-Universität Marburg, Department of Clinical Psychology and Psychotherapy, 35037 Marburg, Germany.
| | - Jost Langhorst
- Sozialstiftung Bamberg, Department of Internal and Integrative Medicine, 96049 Bamberg, Germany; University of Duisburg Essen, Medicinal Faculty, Department of Integrative Medicine, 96049 Bamberg, Germany.
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10
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Hartmann H, Forkmann K, Schmidt K, Kleine-Borgmann J, Albers J, Wiech K, Bingel U. Open-label placebo treatment does not enhance cognitive abilities in healthy volunteers. Sci Rep 2023; 13:19468. [PMID: 37945662 PMCID: PMC10636058 DOI: 10.1038/s41598-023-45979-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 10/26/2023] [Indexed: 11/12/2023] Open
Abstract
The use of so-called 'smart drugs' such as modafinil to improve cognitive performance has recently attracted considerable attention. However, their side effects have limited user enthusiasm. Open-label placebo (OLP) treatment, i.e., inert treatments that are openly disclosed to individuals as having no active pharmacological ingredient, has been shown to improve various medical symptoms and conditions, including those related to cognitive performance. OLP treatment could therefore be an exciting alternative to pharmacological cognitive enhancers. Here, we used a randomized-controlled design to investigate the effect of a 21-day OLP treatment on several sub-domains of cognitive performance in N = 78 healthy volunteers. Subjective and objective measures of cognitive performance as well as different measures of well-being were obtained before and after the treatment period. Using a combination of classic Frequentist and Bayesian analysis approaches showed no additional benefit from OLP treatment in any of the subjective or objective measures of cognitive performance. Our study thus highlights possible limitations of OLP treatment in boosting cognitive performance in healthy volunteers. These findings are discussed in the light of expectancy-value considerations that may determine OLP efficacy.
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Affiliation(s)
- Helena Hartmann
- Clinical Neurosciences, Department of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, Essen, Germany.
| | - Katarina Forkmann
- Clinical Neurosciences, Department of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, Essen, Germany
| | - Katharina Schmidt
- Clinical Neurosciences, Department of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, Essen, Germany
| | - Julian Kleine-Borgmann
- Clinical Neurosciences, Department of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, Essen, Germany
| | - Johanna Albers
- Clinical Neurosciences, Department of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, Essen, Germany
| | - Katja Wiech
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Haedington, Oxford, UK
| | - Ulrike Bingel
- Clinical Neurosciences, Department of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, Essen, Germany
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Basedow LA, Fischer A, Benson S, Bingel U, Brassen S, Büchel C, Engler H, Mueller EM, Schedlowski M, Rief W. The influence of psychological traits and prior experience on treatment expectations. Compr Psychiatry 2023; 127:152431. [PMID: 37862937 DOI: 10.1016/j.comppsych.2023.152431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 10/09/2023] [Accepted: 10/12/2023] [Indexed: 10/22/2023] Open
Abstract
BACKGROUND Placebo and nocebo responses are modulated by the treatment expectations of participants and patients. However, interindividual differences predicting treatment expectations and placebo responses are unclear. In this large-scale pooled analysis, we aim to investigate the influence of psychological traits and prior experiences on treatment expectations. METHODS This paper analyses data from six different placebo studies (total n = 748). In all studies, participants' sociodemographic information, treatment expectations and prior treatment experiences and traits relating to stress, somatization, depression and anxiety, the Big Five and behavioral inhibition and approach tendencies were assessed using the same established questionnaires. Correlation coefficients and structural equation models were calculated to investigate the relationship between trait variables and expectations. RESULTS We found small positive correlations between side effect expectations and improvement expectations (r = 0.187), perceived stress (r = 0.154), somatization (r = 0.115), agitation (r = 0.108), anhedonia (r = 0.118), and dysthymia (r = 0.118). In the structural equation model previous experiences emerged as the strongest predictors of improvement (β = 0.32, p = .005), worsening (β = -0.24, p = .005) and side effect expectations (β = 0.47, p = .005). Traits related to positive affect (β = - 0.09; p = .007) and negative affect (β = 0.04; p = .014) were associated with side effect expectations. DISCUSSION This study is the first large analysis to investigate the relationship between traits, prior experiences and treatment expectations. Exploratory analyses indicate that experiences of symptom improvement are associated with improvement and worsening expectations, while previous negative experiences are only related to side effect expectations. Additionally, a proneness to experience negative affect may be a predictor for side effect expectation and thus mediate the occurrence of nocebo responses.
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Affiliation(s)
- Lukas A Basedow
- Philipps-Universität Marburg, Department of Clinical Psychology and Psychotherapy, 35037 Marburg, Germany.
| | - Anton Fischer
- Philipps-Universität Marburg, Department of Differential Psychology and Personality Research, 35037 Marburg, Germany.
| | - Sven Benson
- Institute of Medical Psychology and Behavioral Immunobiology, Center for Translational Neuro- and Behavioral Sciences, University Hospital of Essen, Essen, Germany.
| | - Ulrike Bingel
- Department of Neurology, Center for Translational Neuro- and Behavioral Sciences, University Hospital Essen, Essen, DE, Germany.
| | - Stefanie Brassen
- Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - Christian Büchel
- Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| | - Harald Engler
- Institute of Medical Psychology and Behavioral Immunobiology, Center for Translational Neuro- and Behavioral Sciences, University Hospital of Essen, Essen, Germany.
| | - Erik M Mueller
- Philipps-Universität Marburg, Department of Differential Psychology and Personality Research, 35037 Marburg, Germany.
| | - Manfred Schedlowski
- Institute of Medical Psychology and Behavioral Immunobiology, Center for Translational Neuro- and Behavioral Sciences, University Hospital of Essen, Essen, Germany; Osher Center for Integrative Health, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
| | - Winfried Rief
- Philipps-Universität Marburg, Department of Clinical Psychology and Psychotherapy, 35037 Marburg, Germany.
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Frisaldi E, Shaibani A, Benedetti F, Pagnini F. Placebo and nocebo effects and mechanisms associated with pharmacological interventions: an umbrella review. BMJ Open 2023; 13:e077243. [PMID: 37848293 PMCID: PMC10582987 DOI: 10.1136/bmjopen-2023-077243] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 09/27/2023] [Indexed: 10/19/2023] Open
Abstract
OBJECTIVES This review aimed to summarise the existing knowledge about placebo and nocebo effects associated with pharmacological interventions and their mechanisms. DESIGN Umbrella review, adopting the Assessment of Multiple Systematic Reviews 2 tool for critical appraisal. DATA SOURCES MEDLINE/PubMed, Scopus, Web of Science, PsycINFO, Cochrane Central Register of Controlled Trial were searched in September 2022, without any time restriction, for systematic reviews, narrative reviews, original articles. Results were summarised through narrative synthesis, tables, 95% CI. OUTCOME MEASURES Mechanisms underlying placebo/nocebo effects and/or their effect sizes. RESULTS The databases search identified 372 studies, for a total of 158 312 participants, comprising 41 systematic reviews, 312 narrative reviews and 19 original articles. Seventy-three per cent of the examined systematic reviews were of high quality.Our findings revealed that mechanisms underlying placebo and/or nocebo effects have been characterised, at least in part, for: pain, non-noxious somatic sensation, Parkinson's disease, migraine, sleep disorders, intellectual disability, depression, anxiety, dementia, addiction, gynaecological disorders, attention-deficit hyperactivity disorder, immune and endocrine systems, cardiovascular and respiratory systems, gastrointestinal disorders, skin diseases, influenza and related vaccines, oncology, obesity, physical and cognitive performance. Their magnitude ranged from 0.08 to 2.01 (95% CI 0.37 to 0.89) for placebo effects and from 0.32 to 0.90 (95% CI 0.24 to 1.00) for nocebo effects. CONCLUSIONS This study provides a valuable tool for clinicians and researchers, identifying both results ready for clinical practice and gaps to address in the near future. FUNDING Università Cattolica del Sacro Cuore, Milan, Italy with the 'Finanziamento Ponte 2022' grant. PROSPERO REGISTRATION NUMBER CRD42023392281.
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Affiliation(s)
- Elisa Frisaldi
- Department of Neuroscience "Rita Levi Montalcini", University of Turin, Turin, Italy
| | - Aziz Shaibani
- Muscle and Nerve Center, Houston, Texas, USA
- Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Fabrizio Benedetti
- Department of Neuroscience "Rita Levi Montalcini", University of Turin, Turin, Italy
| | - Francesco Pagnini
- Department of Psychology, Università Cattolica del Sacro Cuore, Milan, Italy
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Steiner KM, Timmann D, Bingel U, Kunkel A, Spisak T, Schedlowski M, Benson S, Engler H, Scherbaum N, Koelkebeck K. Study protocol: effects of treatment expectation toward repetitive transcranial magnetic stimulation (rTMS) in major depressive disorder-a randomized controlled clinical trial. Trials 2023; 24:553. [PMID: 37620946 PMCID: PMC10464308 DOI: 10.1186/s13063-023-07579-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 08/09/2023] [Indexed: 08/26/2023] Open
Abstract
BACKGROUND Patients' expectations toward any given treatment are highly important for the effectiveness of such treatment, as has been demonstrated for several disorders. In particular, in major depressive disorder (MDD), one of the most frequent and most serious mental disorders with severe consequences for the affected, the augmentation of available treatment options could mean a ground-breaking success. Repetitive transcranial magnetic stimulation (rTMS), a new, non-invasive, and well-tolerated intervention with proven effects in the treatment of MDD, appears particularly suitable in this context as it is assumed to exert its effect via structures implicated in networks relevant for both expectation and depression. METHODS All patients will receive rTMS according to its approval. Half of the patients will be randomized to a psychological intervention, which is a comprehensive medical consultation aiming to improve positive treatment expectations; the control group will receive a conventional informed consent discussion (in the sense of a treatment-as-usual condition). As outcome parameters, instruments for both self-assessment and external assessment of depression symptoms will be applied. Furthermore, psycho-immunological parameters such as inflammation markers and the cortisol awakening response in saliva will be investigated. Resting-state functional magnetic resonance imaging (rs fMRI) will be performed to analyze functional connectivity, including the cerebellum, and to identify neuronal predictors of expectation effects. In addition, possible cerebellar involvement will be assessed based on a cerebellar-dependent motor learning paradigm (i.e., eyeblink conditioning). DISCUSSION In this study, the effects of treatment expectations towards rTMS are investigated in patients with MDD. The aim of this study is to identify the mechanisms underlying the expectation effects and, beyond that, to expand the potential of non-invasive and well-tolerated treatments of MDD. TRIAL REGISTRATION German Registry of Clinical Studies (DRKS DRKS00028017. Registered on 2022/03/07. URL: https://www.drks.de/drks_web/ .
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Affiliation(s)
- Katharina M Steiner
- Department of Psychiatry and Psychotherapy, Medical Faculty, LVR-University-Hospital Essen, University of Duisburg-Essen, Virchowstr, 174, 45147, Essen, Germany.
- Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University Duisburg Essen, Essen, Germany.
| | - Dagmar Timmann
- Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University Duisburg Essen, Essen, Germany
| | - Ulrike Bingel
- Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University Duisburg Essen, Essen, Germany
| | - Angelika Kunkel
- Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University Duisburg Essen, Essen, Germany
| | - Tamas Spisak
- Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University Duisburg Essen, Essen, Germany
| | - Manfred Schedlowski
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University Duisburg Essen, Essen, Germany
- Institute of Medical Psychology and Behavioral Immunobiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Sven Benson
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University Duisburg Essen, Essen, Germany
- Institute of Medical Psychology and Behavioral Immunobiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
- Institute for Medical Education, Essen University Hospital, University Duisburg-Essen, Essen, Germany
| | - Harald Engler
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University Duisburg Essen, Essen, Germany
- Institute of Medical Psychology and Behavioral Immunobiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Norbert Scherbaum
- Department of Psychiatry and Psychotherapy, Medical Faculty, LVR-University-Hospital Essen, University of Duisburg-Essen, Virchowstr, 174, 45147, Essen, Germany
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University Duisburg Essen, Essen, Germany
| | - Katja Koelkebeck
- Department of Psychiatry and Psychotherapy, Medical Faculty, LVR-University-Hospital Essen, University of Duisburg-Essen, Virchowstr, 174, 45147, Essen, Germany
- Center for Translational Neuro- & Behavioral Sciences (C-TNBS), University Duisburg Essen, Essen, Germany
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Henrich L, Wilhelm M, Lange P, Rief W. The role of the communicated treatment rationale on treatment outcome: study protocol for a randomized controlled trial. Trials 2023; 24:540. [PMID: 37592320 PMCID: PMC10433650 DOI: 10.1186/s13063-023-07557-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 07/30/2023] [Indexed: 08/19/2023] Open
Abstract
BACKGROUND Placebo effects are a well-established phenomenon in the treatment of depression. However, the mechanism underlying these effects are not fully understood. Treatment expectations are considered one explanation for why placebos work. Treatment expectations are likely to be affected by clinician-patient interactions. This study aims to investigate the role of the communicated treatment rationale in modulating treatment expectations and its effects on the treatment outcomes of a pharmacological and a psychological active placebo intervention for depression. In this study, treatment expectations are modulated by presenting illness models that are either congruent or incongruent with the treatment intervention that follows. METHODS This 2 × 2 randomized controlled trial will involve patients with major depression. Participants will either receive a biological or a psychological illness model from a clinician. Following this, they are randomly assigned to receive either a pharmacological or a psychological active placebo intervention. The illness model and the treatment are either congruent or incongruent with each other, resulting in four groups. In addition, a natural course control group will be included. DISCUSSION This study will provide insights into the mechanism of expectation modulation in active placebo treatments for major depression. The results may provide insights for clinicians to improve their communication with patients by focusing on treatment expectations. By identifying the factors that contribute to placebo effects, this study has the potential to improve the effectiveness of existing depression treatments and reduce the burden of this highly prevalent mental health condition. TRIAL REGISTRATION This trial has been registered prospectively at ClinicalTrials.gov under the identifier: NCT04719663. Registered on January 22, 2021.
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Affiliation(s)
- Liv Henrich
- Department of Psychology, Division of Clinical Psychology and Psychotherapy, Philipps University of Marburg, Gutenbergstraße 18, 35032, Marburg, Germany.
| | - Marcel Wilhelm
- Department of Psychology, Division of Clinical Psychology and Psychotherapy, Philipps University of Marburg, Gutenbergstraße 18, 35032, Marburg, Germany
| | - Philipp Lange
- Department of Psychology, Division of Clinical Psychology and Psychotherapy, Philipps University of Marburg, Gutenbergstraße 18, 35032, Marburg, Germany
| | - Winfried Rief
- Department of Psychology, Division of Clinical Psychology and Psychotherapy, Philipps University of Marburg, Gutenbergstraße 18, 35032, Marburg, Germany
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15
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Hohenschurz-Schmidt D, Vase L, Scott W, Annoni M, Ajayi OK, Barth J, Bennell K, Berna C, Bialosky J, Braithwaite F, Finnerup NB, Williams ACDC, Carlino E, Cerritelli F, Chaibi A, Cherkin D, Colloca L, Côté P, Darnall BD, Evans R, Fabre L, Faria V, French S, Gerger H, Häuser W, Hinman RS, Ho D, Janssens T, Jensen K, Johnston C, Juhl Lunde S, Keefe F, Kerns RD, Koechlin H, Kongsted A, Michener LA, Moerman DE, Musial F, Newell D, Nicholas M, Palermo TM, Palermo S, Peerdeman KJ, Pogatzki-Zahn EM, Puhl AA, Roberts L, Rossettini G, Tomczak Matthiesen S, Underwood M, Vaucher P, Vollert J, Wartolowska K, Weimer K, Werner CP, Rice ASC, Draper-Rodi J. Recommendations for the development, implementation, and reporting of control interventions in efficacy and mechanistic trials of physical, psychological, and self-management therapies: the CoPPS Statement. BMJ 2023; 381:e072108. [PMID: 37230508 DOI: 10.1136/bmj-2022-072108] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- David Hohenschurz-Schmidt
- Pain Research, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
- Research Department, University College of Osteopathy, London, UK
| | - Lene Vase
- Department of Psychology and Behavioural Sciences, School of Business and Social Sciences, Aarhus University, Denmark
| | - Whitney Scott
- Health Psychology Section, Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's College London; INPUT Pain Management Unit, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Marco Annoni
- Italian National Research Council, Interdepartmental Centre for Research Ethics and Integrity, Rome, Italy
| | - Oluwafemi K Ajayi
- Department of Arts and Music, College of Human Sciences, University of South Africa, Pretoria, South Africa
| | - Jürgen Barth
- Institute for Complementary and Integrative Medicine, University Hospital Zurich and University of Zurich, Switzerland
| | - Kim Bennell
- Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, University of Melbourne, VIC, Australia
| | - Chantal Berna
- Centrer for Integrative and Complementary Medicine, Pain Center, Division of Anesthesiology, Sense Institute, Lausanne University Hospital, Lausanne University, Lausanne, Switzerland
| | - Joel Bialosky
- Department of Physical Therapy, University of Florida, Gainesville FL, USA; Brooks-PHHP Research Collaboration, Jacksonville, FL, USA
| | | | - Nanna B Finnerup
- Danish Pain Research Centre, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Amanda C de C Williams
- Research Department of Clinical, Educational & Health Psychology, University College London, London, UK
| | - Elisa Carlino
- Department of Neuroscience Rita Levi Montalcini, University of Turin, Turin, Italy
| | | | - Aleksander Chaibi
- Department for Interdisciplinary Health Sciences, Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Dan Cherkin
- Osher Center for Integrative Health, Department of Family Medicine, University of Washington, Seattle, WA, USA
| | - Luana Colloca
- Department of Pain and Translational Symptom Science, School of Nursing; Department of Anesthesiology, School of Medicine; University of Maryland, Baltimore, MD, USA
| | - Pierre Côté
- Faculty of Health Sciences, Institute for Disability and Rehabilitation Research, Ontario Tech University, Oshawa, ON, Canada
| | - Beth D Darnall
- Stanford Pain Relief Innovations Lab; Stanford University School of Medicine, Department of Anesthesiology, Perioperative and Pain Medicine, Stanford, CA, USA
| | - Roni Evans
- Integrative Health & Wellbeing Research Program; Center for Spirituality and Healing, University of Minnesota, Minneapolis, MN, USA
| | - Laurent Fabre
- Centre Européen d'Enseignement Supérieur de l'Ostéopathie, Paris, France
| | - Vanda Faria
- Department of Psychology, Uppsala University, Uppsala, Sweden; Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany; Brain and Eye Pain Imaging Lab, Pain and Affective Neuroscience Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA; Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Simon French
- Department of Chiropractic, Faculty of Medicine, Health and Human Sciences, Macquarie University, NSW, Australia
| | - Heike Gerger
- Erasmus MC, University Medical Centre Rotterdam, Department of General Practice, Rotterdam, the Netherlands; Care and Public Health Research Institute (CAPHRI), Maastricht University, Maastricht, the Netherlands
| | - Winfried Häuser
- Department Psychosomatic Medicine and Psychotherapy, Technische Universität München, Munich, Germany
| | - Rana S Hinman
- Centre for Health, Exercise & Sports Medicine, University of Melbourne, Melbourne, VIC, Australia
| | - Dien Ho
- Center for Health Humanities, School of Arts and Sciences, Massachusetts College of Pharmacy and Health Sciences, Boston MA, USA
| | - Thomas Janssens
- Health Psychology, KU Leuven; Ebpracticenet, Leuven, Belgium
| | - Karin Jensen
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Chris Johnston
- BC Patient Safety & Quality Council's Patient Voices Network; Health Research BC's Partnership-Ready Network; Health Standards Organization's Emergency Management Technical Committee & Working Group
| | - Sigrid Juhl Lunde
- Department of Psychology and Behavioural Sciences, School of Business and Social Sciences, Aarhus University, Denmark
| | - Francis Keefe
- Duke University, School of Medicine, Durham, NC, USA
| | - Robert D Kerns
- Departments of Psychiatry, Neurology, and Psychology, Yale University, New Haven, CT, USA
| | - Helen Koechlin
- Division of Psychosomatics and Psychiatry, University Children's Hospital Zurich; Division of Child and Adolescent Health Psychology, Department of Psychology, University of Zurich, Zurich, Switzerland; Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Alice Kongsted
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark; Chiropractic Knowledge Hub, Odense, Denmark
| | - Lori A Michener
- Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles CA, USA
| | - Daniel E Moerman
- College of Arts, Sciences, and Letters, Behavioral Sciences, University of Michigan, Dearborn, MI, USA
| | - Frauke Musial
- National Research Centre in Complementary and Alternative Medicine, Department of Community Medicine, Faculty of Health Science UiT, Arctic University of Norway, Tromsø, Norway
| | | | - Michael Nicholas
- Pain Management Research Institute, University of Sydney Medical School (Northern) and Kolling Institute of Medical Research at Royal North Shore Hospital, Sydney, Australia
| | - Tonya M Palermo
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA, USA
| | - Sara Palermo
- Diagnostic and Technology Department, Neuroradiology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy; Department of Psychology, University of Turin, Turin, Italy
| | - Kaya J Peerdeman
- Unit Health, Medical and Neuropsychology, Leiden University, Leiden, the Netherlands
| | - Esther M Pogatzki-Zahn
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Münster, Germany
| | | | - Lisa Roberts
- University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Giacomo Rossettini
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Campus of Savona, Savona, Italy; School of Physiotherapy, University of Verona, Verona, Italy
| | - Susan Tomczak Matthiesen
- Department of Psychology and Behavioural Sciences, School of Business and Social Sciences, Aarhus University, Denmark
| | - Martin Underwood
- Warwick Clinical Trials Unit; University of Warwick, Coventry, UK; University Hospitals Coventry and Warwickshire, Coventry, UK
| | - Paul Vaucher
- School of Health Sciences Fribourg, HES-SO University of Applied Sciences and Arts Western Switzerland, Switzerland
| | - Jan Vollert
- Pain Research, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK; Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital of Schleswig-Holstein, Campus Kiel, Germany; Neurophysiology, Mannheim Centre of Translational Neuroscience, Medical Faculty Mannheim, Heidelberg University, Germany; Department of Anaesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Germany
| | - Karolina Wartolowska
- Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Katja Weimer
- Department of Psychosomatic Medicine and Psychotherapy, Ulm University Medical Centre, Ulm, Germany
| | - Christoph Patrick Werner
- School of Psychology, Faculty of Science, University of Sydney, Australia; Department of Clinical Research, University Hospital Basel, Switzerland
| | - Andrew S C Rice
- Pain Research, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
| | - Jerry Draper-Rodi
- Research Department, University College of Osteopathy, London, UK
- National Council for Osteopathic Research, London, UK
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Bott FS, Nickel MM, Hohn VD, May ES, Gil Ávila C, Tiemann L, Gross J, Ploner M. Local brain oscillations and interregional connectivity differentially serve sensory and expectation effects on pain. SCIENCE ADVANCES 2023; 9:eadd7572. [PMID: 37075123 PMCID: PMC10115421 DOI: 10.1126/sciadv.add7572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Pain emerges from the integration of sensory information about threats and contextual information such as an individual's expectations. However, how sensory and contextual effects on pain are served by the brain is not fully understood so far. To address this question, we applied brief painful stimuli to 40 healthy human participants and independently varied stimulus intensity and expectations. Concurrently, we recorded electroencephalography. We assessed local oscillatory brain activity and interregional functional connectivity in a network of six brain regions playing key roles in the processing of pain. We found that sensory information predominantly influenced local brain oscillations. In contrast, expectations exclusively influenced interregional connectivity. Specifically, expectations altered connectivity at alpha (8 to 12 hertz) frequencies from prefrontal to somatosensory cortex. Moreover, discrepancies between sensory information and expectations, i.e., prediction errors, influenced connectivity at gamma (60 to 100 hertz) frequencies. These findings reveal how fundamentally different brain mechanisms serve sensory and contextual effects on pain.
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Affiliation(s)
- Felix S. Bott
- Department of Neurology and TUM-Neuroimaging Center (TUM-NIC), TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Moritz M. Nickel
- Department of Neurology and TUM-Neuroimaging Center (TUM-NIC), TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Vanessa D. Hohn
- Department of Neurology and TUM-Neuroimaging Center (TUM-NIC), TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Elisabeth S. May
- Department of Neurology and TUM-Neuroimaging Center (TUM-NIC), TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Cristina Gil Ávila
- Department of Neurology and TUM-Neuroimaging Center (TUM-NIC), TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Laura Tiemann
- Department of Neurology and TUM-Neuroimaging Center (TUM-NIC), TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany
| | - Joachim Gross
- Institute for Biomagnetism and Biosignalanalysis, University of Münster, Münster, Germany
| | - Markus Ploner
- Department of Neurology and TUM-Neuroimaging Center (TUM-NIC), TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany
- Corresponding author.
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Ewen ACI, Bleichhardt G, Rief W, Von Blanckenburg P, Wambach K, Wilhelm M. Expectation focused and frequency enhanced cognitive behavioural therapy for patients with major depression (EFFECT): a study protocol of a randomised active-control trial. BMJ Open 2023; 13:e065946. [PMID: 36948546 PMCID: PMC10040046 DOI: 10.1136/bmjopen-2022-065946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/24/2023] Open
Abstract
INTRODUCTION The effectiveness of psychotherapy in depression is subject of an ongoing debate. The mechanisms of change are still underexplored. Research tries to find influencing factors fostering the effect of psychotherapy. In that context, the dose-response relationship should receive more attention. Increasing the frequency from one to two sessions per week seems to be a promising start. Moreover, the concept of expectations and its influence in depression can be another auspicious approach. Dysfunctional expectations and the lack of their modification are central in symptom maintenance. Expectation focused psychological interventions (EFPI) have been investigated, primarily in the field of depression. The aim of this study is to compare cognitive behavioural therapy (CBT) once a week with an intensified version of CBT (two times a week) in depression as well as to include a third proof-of-principle intervention group receiving a condensed expectation focused CBT. METHODS AND ANALYSIS Participants are recruited through an outpatient clinic in Germany. A current major depressive episode, diagnosed via structured clinical interviews should present as the main diagnosis. The planned randomised-controlled trial will allow comparisons between the following treatment conditions: CBT (one session/week), condensed CBT (two sessions/week) and EFPI (two sessions/week). All treatment arms include a total dose of 24 sessions. Depression severity applies as the outcome variable (Beck Depression Inventory II, Montgomery Asberg Depression Rating Scale). A sample size of n=150 is intended. ETHICS AND DISSEMINATION The local ethics committee of the Department of Psychology, Philipps-University Marburg approved the study (reference number 2020-68 v). The final research article including the study results is intended to be published in international peer-reviewed journals. TRIAL REGISTRATION NUMBER German Clinical Trials Registry (DRKS00023203).
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Affiliation(s)
- Anne-Catherine Isabelle Ewen
- Klinische Psychologie und Psychotherapie, Fachbereich Psychologie, Philipps-Universität Marburg, Marburg, Germany
| | - Gaby Bleichhardt
- Klinische Psychologie und Psychotherapie, Fachbereich Psychologie, Philipps-Universität Marburg, Marburg, Germany
| | - Winfried Rief
- Klinische Psychologie und Psychotherapie, Fachbereich Psychologie, Philipps-Universität Marburg, Marburg, Germany
| | - Pia Von Blanckenburg
- Klinische Psychologie und Psychotherapie, Fachbereich Psychologie, Philipps-Universität Marburg, Marburg, Germany
| | - Katrin Wambach
- Klinische Psychologie und Psychotherapie, Fachbereich Psychologie, Philipps-Universität Marburg, Marburg, Germany
| | - Marcel Wilhelm
- Klinische Psychologie und Psychotherapie, Fachbereich Psychologie, Philipps-Universität Marburg, Marburg, Germany
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Kleine-Borgmann J, Dietz TN, Schmidt K, Bingel U. No long-term effects after a 3-week open-label placebo treatment for chronic low back pain: a 3-year follow-up of a randomized controlled trial. Pain 2023; 164:645-652. [PMID: 35947884 PMCID: PMC9916047 DOI: 10.1097/j.pain.0000000000002752] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/03/2022] [Accepted: 06/06/2022] [Indexed: 11/25/2022]
Abstract
ABSTRACT Chronic low back pain is prevalent, highly disabling, and a relevant socioeconomic health concern. Although allocated to placebo groups, patients in randomized controlled trials show significant pain relief, pointing to the relevance of placebo effects. Overcoming ethical and legal concerns related to deceptive placebos, recent studies have demonstrated the efficacy of short-term treatments for chronic low back pain with open-label (ie, nondeceptive) placebos. However, data on long-term efficacy of open-label placebos are sparse. Here, we report a 3-year follow-up of our previously published randomized controlled trial demonstrating pain reduction, improvement in disability, and depressive symptoms after a 3-week treatment with open-label placebos. Including records from 89 previously enrolled patients, we investigated changes between the groups with and without previous open-label placebo treatment in pain intensity (primary outcome), disability and mood (secondary outcomes), biopsychosocial factors and lifestyle (exploratory outcomes) from parent baseline to follow-up. Over the 3-year period, there were no differences in any outcome between groups with and without open-label placebo treatment. Therefore, our follow-up data do not support the previously suggested assumption that a 3-week open-label placebo treatment has long-term effects. This study was preregistered on April 14, 2020, in the German Clinical Trials Register (registration number DRKS00021405).
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Affiliation(s)
- Julian Kleine-Borgmann
- Department of Neurology, Center for Translational Neuro- and Behavioral Sciences, University Medicine Essen, Essen, Germany
| | - Tim-Niklas Dietz
- Department of Neurology, Center for Translational Neuro- and Behavioral Sciences, University Medicine Essen, Essen, Germany
| | - Katharina Schmidt
- Department of Neurology, Center for Translational Neuro- and Behavioral Sciences, University Medicine Essen, Essen, Germany
| | - Ulrike Bingel
- Department of Neurology, Center for Translational Neuro- and Behavioral Sciences, University Medicine Essen, Essen, Germany
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19
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Pratscher SD, Sibille KT, Fillingim RB. Conscious connected breathing with breath retention intervention in adults with chronic low back pain: protocol for a randomized controlled pilot study. Pilot Feasibility Stud 2023; 9:15. [PMID: 36694217 PMCID: PMC9872326 DOI: 10.1186/s40814-023-01247-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 01/16/2023] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Chronic pain is a major source of human suffering, and chronic low back pain (cLBP) is among the most prevalent, costly, and disabling of pain conditions. Due to the significant personal and societal burden and the complex and recurring nature of cLBP, self-management approaches that can be practiced at home are highly relevant to develop and test. The respiratory system is one of the most integrated systems of the body, and breathing is bidirectionally related with stress, emotion, and pain. Thus, the widespread physiological and psychological impact of breathing practices and breathwork interventions hold substantial promise as possible self-management strategies for chronic pain. The primary aim of the current randomized pilot study is to test the feasibility and acceptability of a conscious connected breathing with breath retention intervention compared to a sham control condition. METHODS The rationale and procedures for testing a 5-day conscious connected breathing with breath retention intervention, compared to a deep breathing sham control intervention, in 24 adults (18-65 years) with cLBP is described. Both interventions will be delivered using standardized audio recordings and practiced over 5 days (two times in-person and three times at-home), and both are described as Breathing and Attention Training to reduce possible expectancy and placebo effects common in pain research. The primary outcomes for this study are feasibility and acceptability. Feasibility will be evaluated by determining rates of participant recruitment, adherence, retention, and study assessment completion, and acceptability will be evaluated by assessing participants' satisfaction and helpfulness of the intervention. We will also measure other clinical pain, psychological, behavioral, and physiological variables that are planned to be included in a follow-up randomized controlled trial. DISCUSSION This will be the first study to examine the effects of a conscious connected breathing with breath retention intervention for individuals with chronic pain. The successful completion of this smaller-scale pilot study will provide data regarding the feasibility and acceptability to conduct a subsequent trial testing the efficacy of this breathing self-management practice for adults with cLBP. TRIAL REGISTRATION Clinicaltrials.gov, identifier NCT04740710 . Registered on 5 February 2021.
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Affiliation(s)
- Steven D Pratscher
- Department of Community Dentistry and Behavioral Science, University of Florida, Gainesville, FL, USA.
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, USA.
| | - Kimberly T Sibille
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, USA
- Department of Physical Medicine & Rehabilitation, University of Florida, Gainesville, FL, USA
| | - Roger B Fillingim
- Department of Community Dentistry and Behavioral Science, University of Florida, Gainesville, FL, USA
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, USA
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20
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Kunkel A, Bingel U. [Placebo effects in analgesia : Influence of expectations on the efficacy and tolerability of analgesic treatment]. Schmerz 2023; 37:59-71. [PMID: 36637498 PMCID: PMC9889476 DOI: 10.1007/s00482-022-00685-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/18/2022] [Indexed: 01/14/2023]
Abstract
Expectations of patients influence the perception and neuronal processing of acute and chronic pain and modulate the effectiveness of analgesic treatment. The expectation of treatment is not only the most important determinant of placebo analgesia. Expectations of treatment also influence the efficacy and tolerability of "active" pharmacological and non-pharmacological treatment of pain. Recent insights into the psychological and neurobiological mechanisms underlying the clinically relevant effects of treatment expectations enable and call for the systematic integration and modulation of treatment expectations into analgesic treatment concepts. Such a strategy promises to optimize analgesic treatment and to prevent or reduce the burden of unwanted side effects and the misuse of analgesics, particularly of opioids. This review highlights the current concepts, recent achievements and also challenges and key open research questions.
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Affiliation(s)
- Angelika Kunkel
- Klinik für Neurologie, Zentrum für translationale Neuro- und Verhaltenswissenschaften, Universitätsklinikum Essen, Hufelandstr. 55, 45147, Essen, Deutschland.
| | - Ulrike Bingel
- Klinik für Neurologie, Zentrum für translationale Neuro- und Verhaltenswissenschaften, Universitätsklinikum Essen, Hufelandstr. 55, 45147, Essen, Deutschland
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21
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Individual treatment expectations predict clinical outcome after lumbar injections against low back pain. Pain 2023; 164:132-141. [PMID: 35543638 DOI: 10.1097/j.pain.0000000000002674] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 04/15/2022] [Indexed: 01/09/2023]
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22
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Tu Y, Zhang L, Kong J. Placebo and nocebo effects: from observation to harnessing and clinical application. Transl Psychiatry 2022; 12:524. [PMID: 36564374 PMCID: PMC9789123 DOI: 10.1038/s41398-022-02293-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 12/12/2022] [Accepted: 12/15/2022] [Indexed: 12/25/2022] Open
Abstract
Placebo and nocebo effects are salubrious benefits and negative outcomes attributable to non-specific symbolic components. Leveraging advanced experimental and analytical approaches, recent studies have elucidated complicated neural mechanisms that may serve as a solid basis for harnessing the powerful self-healing and self-harming capacities and applying these findings to improve medical practice and minimize the unintended exacerbation of symptoms in medical practice. We review advances in employing psychosocial, pharmacological, and neuromodulation approaches to modulate/harness placebo and nocebo effects. While these approaches show promising potential, translating these research findings into clinical settings still requires careful methodological, technical, and ethical considerations.
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Affiliation(s)
- Yiheng Tu
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China. .,Department of Psychology, University of Chinese Academy of Sciences, Beijing, China.
| | - Libo Zhang
- grid.9227.e0000000119573309CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China ,grid.410726.60000 0004 1797 8419Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Jian Kong
- grid.32224.350000 0004 0386 9924Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA USA
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23
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Bricca A, Jäger M, Dideriksen M, Rasmussen H, Nyberg M, Pedersen JR, Zangger G, Andreasson KH, Skou ST. Personalised exercise therapy and self-management support for people with multimorbidity: Development of the MOBILIZE intervention. Pilot Feasibility Stud 2022; 8:244. [PMID: 36461048 PMCID: PMC9717541 DOI: 10.1186/s40814-022-01204-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 11/09/2022] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND To our knowledge, there is no intervention which includes personalised exercise therapy and self-management support for people with multimorbidity, although these interventions may be as effective as for people with single chronic conditions. Therefore, we developed a novel intervention, including personalised exercise therapy and self-management support for people with multimorbidity. METHODS We followed the Medical Research Council framework and conducted one scoping review, five systematic reviews, two registry-based studies, one qualitative interview study and a mixed-methods feasibility study. Following an iterative approach, together with feedback from people with multimorbidity and relevant stakeholders, we developed the MOBILIZE intervention. RESULTS The intervention included 24 (60 minutes) sessions of personalised exercise therapy and 24 (30 minutes) sessions of self-management support twice a week for 12 weeks, delivered in small groups by specifically trained physiotherapists. The intervention targets physiological, psychosocial, behavioural, and contextual factors to improve health-related quality of life and physical function in people living with multimorbidity. CONCLUSIONS We developed a personalised exercise therapy and self-management support programme for people with multimorbidity. The intervention will be tested for its safety and effectiveness in a randomised controlled trial.
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Affiliation(s)
- Alessio Bricca
- grid.10825.3e0000 0001 0728 0170Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, 5230 Odense M, Denmark ,grid.512922.fThe Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark
| | - Madalina Jäger
- grid.10825.3e0000 0001 0728 0170Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, 5230 Odense M, Denmark ,grid.512922.fThe Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark ,grid.10825.3e0000 0001 0728 0170Danish centre for motivation and behaviour science, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense M, Denmark
| | - Mette Dideriksen
- grid.10825.3e0000 0001 0728 0170Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, 5230 Odense M, Denmark ,grid.512922.fThe Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark
| | - Hanne Rasmussen
- grid.512922.fThe Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark
| | - Mette Nyberg
- grid.512922.fThe Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark
| | - Julie Rønne Pedersen
- grid.10825.3e0000 0001 0728 0170Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, 5230 Odense M, Denmark
| | - Graziella Zangger
- grid.10825.3e0000 0001 0728 0170Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, 5230 Odense M, Denmark ,grid.512922.fThe Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark
| | - Karen Hjerrild Andreasson
- grid.512922.fThe Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark
| | - Søren T. Skou
- grid.10825.3e0000 0001 0728 0170Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, 5230 Odense M, Denmark ,grid.512922.fThe Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark ,grid.10825.3e0000 0001 0728 0170Danish centre for motivation and behaviour science, Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense M, Denmark
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24
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Chen ZS, Wang J. Pain, from perception to action: A computational perspective. iScience 2022; 26:105707. [PMID: 36570771 PMCID: PMC9771728 DOI: 10.1016/j.isci.2022.105707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Pain is driven by sensation and emotion, and in turn, it motivates decisions and actions. To fully appreciate the multidimensional nature of pain, we formulate the study of pain within a closed-loop framework of sensory-motor prediction. In this closed-loop cycle, prediction plays an important role, as the interaction between prediction and actual sensory experience shapes pain perception and subsequently, action. In this Perspective, we describe the roles of two prominent computational theories-Bayesian inference and reinforcement learning-in modeling adaptive pain behaviors. We show that prediction serves as a common theme between these two theories, and that each of these theories can explain unique aspects of the pain perception-action cycle. We discuss how these computational theories and models can improve our mechanistic understandings of pain-centered processes such as anticipation, attention, placebo hypoalgesia, and pain chronification.
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Affiliation(s)
- Zhe Sage Chen
- Department of Psychiatry, New York University Grossman School of Medicine, New York, NY 10016, USA,Department of Neuroscience and Physiology, New York University Grossman School of Medicine, New York, NY 10016, USA,Neuroscience Institute, NYU Grossman School of Medicine, New York, NY 10016, USA,Interdisciplinary Pain Research Program, NYU Langone Health, New York, NY 10016, USA,Corresponding author
| | - Jing Wang
- Department of Neuroscience and Physiology, New York University Grossman School of Medicine, New York, NY 10016, USA,Neuroscience Institute, NYU Grossman School of Medicine, New York, NY 10016, USA,Interdisciplinary Pain Research Program, NYU Langone Health, New York, NY 10016, USA,Department of Anesthesiology, Perioperative Care and Pain Medicine, New York University Grossman School of Medicine, New York, NY 10016, USA,Corresponding author
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25
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Meissner K. Placebo, nocebo: Believing in the field of medicine. FRONTIERS IN PAIN RESEARCH 2022; 3:972169. [PMID: 35965595 PMCID: PMC9372488 DOI: 10.3389/fpain.2022.972169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 07/11/2022] [Indexed: 11/18/2022] Open
Affiliation(s)
- Karin Meissner
- Division of Health Promotion, Coburg University of Applied Sciences and Arts, Coburg, Germany
- Medical Faculty, Institute of Medical Psychology, Ludwig-Maximilians-University Munich, Munich, Germany
- *Correspondence: Karin Meissner
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26
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Krebs E, Hongdilokkul N, Dale LM, Min JE, Schnepel KT, Shigeoka H, Nosyk B. The effect of a methadone reformulation on opioid agonist treatment outcomes: A population-based study in British Columbia, Canada, 2013-14. J Subst Abuse Treat 2022; 138:108714. [PMID: 35101357 PMCID: PMC9833651 DOI: 10.1016/j.jsat.2021.108714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 11/23/2021] [Accepted: 12/15/2021] [Indexed: 01/13/2023]
Abstract
INTRODUCTION The province of British Columbia, Canada, changed the existing oral anhydrous methadone solution to a 10-times more concentrated pre-mixed solution, Methadose®, on February 1, 2014. We aimed to assess the immediate effects of the methadone reformulation on missed doses, days off methadone, changes in medication dosing and dispensations of opioids for pain, and hospitalizations and mortality among all people receiving treatment at or near the time of the change. METHODS We conducted a population-based retrospective cohort study including all individuals receiving at least one methadone dispensation in the 12 months prior to the study period. We executed a difference-in-differences analysis by estimating a multivariate regression model to compare outcomes in the three months before and after the reformulation (November 1, 2013 to April 30, 2014) versus a time-lagged control cohort with similar characteristics observed during an equivalent nonoverlapping interval. We used daily individual-level linked health administrative data capturing missed doses, days off methadone, changes in methadone dosing, concurrent dispensations of opioids for pain, hospitalizations, and mortality. We stratified the cohorts into three subgroups: (i) those receiving OAT for ≥12 months; (ii) those receiving OAT for <12 months; and (iii) those not receiving OAT at the start of the study period. We conducted sensitivity analyses and placebo tests to assess the robustness of our results. RESULTS Among the 16,339 individuals receiving methadone during the study period, the reformulation was associated with more instances of methadone dose increases (34.5% [95% Confidence Interval (CI): 27.4%, 41.5%]). For those retained in treatment ≥12 months prior to the study period (n = 7449), the reformulation was associated with more instances of methadone dose increases (50.2% [39.5%, 60.8%]) and dispensations of opioids for pain (62.2% [40.8%, 83.5%]), as well as an increase in missed doses (41.9% [29.1%, 54.7%]) and days off methadone (62.6% [39.7%, 85.4%]). We found no statistically significant change in risk of hospitalization or mortality. Sensitivity analyses supported our results. CONCLUSION Our results reinforce the need expressed by people receiving methadone for greater client involvement in the planning and implementation of regulatory changes that may impact client care, especially those patients with a relatively long treatment history.
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Affiliation(s)
- Emanuel Krebs
- Faculty of Health Sciences, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada, V5A 1S6,Centre for Health Evaluation and Outcome Sciences, 1081 Burrard Street, Vancouver, British Columbia, Canada, V6Z IY6
| | - Natt Hongdilokkul
- BC Office of the Human Rights Commissioner, 999 Canada Place, Vancouver, British Columbia, Canada, V6C 3L5
| | - Laura M Dale
- Centre for Health Evaluation and Outcome Sciences, 1081 Burrard Street, Vancouver, British Columbia, Canada, V6Z IY6
| | - Jeong E Min
- Centre for Health Evaluation and Outcome Sciences, 1081 Burrard Street, Vancouver, British Columbia, Canada, V6Z IY6
| | - Kevin T Schnepel
- Department of Economics, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada, V5A 1S6
| | - Hitoshi Shigeoka
- Department of Economics, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada, V5A 1S6
| | - Bohdan Nosyk
- Faculty of Health Sciences, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada, V5A 1S6,Centre for Health Evaluation and Outcome Sciences, 1081 Burrard Street, Vancouver, British Columbia, Canada, V6Z IY6
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27
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Schwartz M, Fischer LM, Bläute C, Stork J, Colloca L, Zöllner C, Klinger R. Observing treatment outcomes in other patients can elicit augmented placebo effects on pain treatment: a double-blinded randomized clinical trial with patients with chronic low back pain. Pain 2022; 163:1313-1323. [PMID: 35262315 PMCID: PMC9199107 DOI: 10.1097/j.pain.0000000000002513] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 09/08/2021] [Accepted: 09/28/2021] [Indexed: 11/25/2022]
Abstract
ABSTRACT Clinical research on social observational learning (SoL) as an underlying mechanism for inducing expectancy and eliciting analgesic placebo effects is lacking. This double-blinded randomized controlled clinical trial investigated the influence of SoL on medication-augmenting placebo effects in 44 patients with chronic low back pain. Our hypothesis was that observing positive drug effects on pain and mobility in another patient could increase pain reduction and functional capacity. To test this, we compared the effects of observing positive treatment outcomes in a sham patient (the social learning group [SoLG]) vs hearing the same sham patient report neutral effects (the control group). In the SoLG, the sham patient told peers about pain reduction due to amitriptyline and demonstrated his improved mobility by bending forwards and sideways while he told the control group only that he was taking amitriptyline. The primary outcome was a reduction in clinical low back pain self-ratings. The secondary outcome was perceptions of pain-related disability. The exploratory outcome was mood and coping statements. Data collection occurred before and after the intervention and 2 weeks later. After the intervention, pain decreased in both groups (F [1, 41] = 7.16, P < 0.05, d = 0.83), with no difference between groups. However, the SoLG showed a significantly larger decrease in perceived disability (F [1, 41] = 5, P < 0.05, d = 0.63). The direct observation of patient with chronic low back pain of positive treatment outcomes in the sham patient seems to have enhanced the treatment effects while indirect verbal reports of reduced pain did not.
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Affiliation(s)
- Marie Schwartz
- Zentrum für Anästhesiologie und Intensivmedizin, Universitätsklinikum Eppendorf, Hamburg, Germany
| | - Laura-Marie Fischer
- Zentrum für Anästhesiologie und Intensivmedizin, Universitätsklinikum Eppendorf, Hamburg, Germany
| | - Corinna Bläute
- Zentrum für Anästhesiologie und Intensivmedizin, Universitätsklinikum Eppendorf, Hamburg, Germany
| | - Jan Stork
- Zentrum für Anästhesiologie und Intensivmedizin, Universitätsklinikum Eppendorf, Hamburg, Germany
| | - Luana Colloca
- University of Maryland School of Nursing & School of Medicine, Baltimore, MD, United States
| | - Christian Zöllner
- Zentrum für Anästhesiologie und Intensivmedizin, Universitätsklinikum Eppendorf, Hamburg, Germany
| | - Regine Klinger
- Zentrum für Anästhesiologie und Intensivmedizin, Universitätsklinikum Eppendorf, Hamburg, Germany
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28
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Asan L, Bingel U, Kunkel A. [Neurobiological and neurochemical mechanisms of placebo analgesia]. Schmerz 2022; 36:205-212. [PMID: 35301592 PMCID: PMC9156503 DOI: 10.1007/s00482-022-00630-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 12/15/2021] [Accepted: 01/20/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND The efficacy of pain therapies can be substantially modulated by treatment expectations, which is reflected by the substantial placebo effects observed in pain (so called placebo analgesia). QUESTION What is currently known about the neurobiological and neurochemical mechanisms underlying placebo analgesia? MATERIALS AND METHODS A focused presentation of key publications in the field embedded in a structured overview of the mechanistic concepts and current theories according to recent evidence. RESULTS Experimental studies with functional neuroimaging showed that the effect of placebo analgesia is reflected by changes in brain activity related to pain processing and cognitive control. The important neurotransmitters involved include opioids and dopamine. CONCLUSION Placebo analgesia is associated with complex neurobiological and -physiological mechanisms. An advanced comprehension of these processes should be applied to optimize existing and future therapeutic approaches in pain therapy.
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Affiliation(s)
- Livia Asan
- Klinik für Neurologie und Center for Translational Neuro- and Behavioral Sciences (C-TNBS), Unversitätsmedizin Essen, Hufelandstraße 55, 45147, Essen, Deutschland.
| | - Ulrike Bingel
- Klinik für Neurologie und Center for Translational Neuro- and Behavioral Sciences (C-TNBS), Unversitätsmedizin Essen, Hufelandstraße 55, 45147, Essen, Deutschland
| | - Angelika Kunkel
- Klinik für Neurologie und Center for Translational Neuro- and Behavioral Sciences (C-TNBS), Unversitätsmedizin Essen, Hufelandstraße 55, 45147, Essen, Deutschland
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29
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Villiger D. The role of expectations in transformative experiences. PHILOSOPHICAL PSYCHOLOGY 2022. [DOI: 10.1080/09515089.2022.2070063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Daniel Villiger
- Institute of Philosophy, University of Zurich, Zurich, Switzerland
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30
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Erwartungsfokussierte psychotherapeutische Interventionen bei Depression: ein Behandlungsmanual. PSYCHOTHERAPEUT 2022. [DOI: 10.1007/s00278-022-00590-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Zusammenfassung
Hintergrund
Kognitive Verhaltenstherapie (KVT) ist bei Depression langfristig wirksam, jedoch besteht Verbesserungsbedarf. In der Forschung zum Placeboeffekt und der Neurowissenschaft wird die zentrale Bedeutung von Erwartungen immer deutlicher. Neue Therapieansätze zur Modifikation dysfunktionaler Erwartungen (erwartungsfokussierte psychotherapeutische Interventionen, EFPI) scheinen ein vielversprechender Baustein zur Verbesserung der klassischen KVT zu sein.
Ziel der Arbeit
Die wesentlichen Bausteine eines EFPI-Behandlungsmanuals bei Depression werden vorgestellt.
Material und Methoden
Das Manual ist auf 24 Sitzungen (Kurzzeittherapie) ausgelegt. Es umfasst 5 Sitzungen Psychoedukation zu Erwartungsformulierung, -überprüfung und -verletzung sowie zur kognitiven Immunisierung (nachträgliche Umbewertung erwartungsverletzender Erfahrungen). Nach der Psychoedukation folgt eine Phase, in der in jeder Sitzung ein Verhaltensexperiment durchgeführt oder geplant wird. Die Verhaltensexperimente sollen zentrale krankheitsaufrechterhaltende Erwartungen herausfordern („Erwartungsverletzung“). Zusätzlich werden kognitive Immunisierungsstrategien besprochen und nach Möglichkeit verhindert. In der letzten Sitzung erfolgen eine Zusammenfassung und Konsolidierung des Erarbeiteten im Sinne einer Rückfallprophylaxe. Das Manual wurde in einer kleinen Pilotstudie (n = 5) erprobt.
Ergebnisse
Die EFPI-Therapie wurde von allen Beteiligten gut angenommen. Eine umfassende Evaluation erfolgt derzeit.
Diskussion
Das EFPI-Manual stellt die Fokussierung einer KVT auf möglichst viele, deutliche Erwartungsüberprüfungen bei zusätzlicher Adressierung kognitiver Immunisierung dar. Gezielt können persistierende, dysfunktionale Erwartungen von Personen mit Depression behandelt werden.
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Müßgens D, Burgard LC, Kleine-Borgmann J, Frettlöh J, Sorgatz H, Bingel U. Impact of the COVID-19 pandemic on patients with chronic pain in Germany: associations with expectations and control beliefs. Eur J Pain 2022; 26:1343-1354. [PMID: 35445510 PMCID: PMC9087415 DOI: 10.1002/ejp.1955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Background While the COVID‐19 pandemic is affecting people's well‐being worldwide, it may place a particularly high burden on people with chronic pain, as pain is known to be influenced by societal and psychological conditions. Methods In this observational study, we conducted telephone interviews with 196 patients with chronic pain to assess the impact of the pandemic on various aspects of their pain and everyday life. The initial interviews were conducted between April and May 2020 and were followed up by a second interview between August and December 2020. Results A substantial percentage of patients (39% at the first and 32% at the second interview) reported an increase in pain intensity due to the pandemic. Exploratory analyses revealed that patients who already suffered from greater pain and who experienced greater restrictions due to the pandemic were more likely to express pain worsening. Psychological factors such as negative expectations about the development of their pain and pain treatment and a high external locus of control were also associated with increases in pain. Conclusions These findings illustrate the complexity of chronic pain, suggesting that not only the impact of the pandemic on various areas of life but also the severity of the pain‐symptoms themselves and psychological factors influence the course of patients' symptoms during the pandemic. Significance This study underlines the importance of psychosocial factors in chronic pain and demonstrates that the societal and psychological impact of the COVID‐19 pandemic can affect patients' pain and their ability to cope with it. The extent to which patients experience pain aggravation seems to interact with other psychological factors such as pain expectations and control beliefs.
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Affiliation(s)
- Diana Müßgens
- Department of Neurology, Center of Translational Neuro- and Behavioral Sciences, University Medicine Essen, University Duisburg-, Essen, Germany
| | - Lisa Carolin Burgard
- Department of Neurology, Center of Translational Neuro- and Behavioral Sciences, University Medicine Essen, University Duisburg-, Essen, Germany
| | - Julian Kleine-Borgmann
- Department of Neurology, Center of Translational Neuro- and Behavioral Sciences, University Medicine Essen, University Duisburg-, Essen, Germany
| | - Jule Frettlöh
- Department of Neurology, Ruhr-University Bochum, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil, Bochum, Germany
| | - Hardo Sorgatz
- Technical University Human Sciences, Darmstadt, Germany
| | - Ulrike Bingel
- Department of Neurology, Center of Translational Neuro- and Behavioral Sciences, University Medicine Essen, University Duisburg-, Essen, Germany
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32
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Schwartz M, Stuhlreyer J, Klinger R. [Seeing others is believing-analgesic placebo effects through observational learning?]. Schmerz 2022; 36:196-204. [PMID: 35419736 PMCID: PMC9156489 DOI: 10.1007/s00482-022-00646-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 02/25/2022] [Accepted: 03/04/2022] [Indexed: 11/28/2022]
Abstract
Hintergrund Es gibt viele Studien zur Placeboanalgesie und deren zugrundliegenden Wirkmechanismen, die eine Behandlung von Patient:innen mit chronischen Schmerzen signifikant verbessern können. Beobachtungslernen als ein Wirkmechanismus wurde hingegen noch wenig untersucht. Fragestellung Das Ziel der Arbeit ist es, einen Überblick über die aktuelle Forschungslage zu Placeboanalgesie durch Beobachtungslernen zu geben. Dabei soll geklärt werden, ob Beobachtungslernen überhaupt einen signifikanten Placeboeffekt auslösen kann und durch welche Faktoren dieses Lernen beeinflusst wird. Material und Methoden Dafür wurden die Forschungsdatenbanken nach Studien zur Placeboanalgesie durch Beobachtungslernen durchsucht. Ergebnisse Nach der Anwendung der Ein- und Ausschlusskriterien verblieben 12 Studien. Es gab nur eine Studie, die an Patient:innen mit chronischen Schmerzen durchgeführt wurde. Die geringe Anzahl an Studien lässt noch keine allgemeingültigen Aussagen zu, aber es gibt erste Hinweise für die folgenden Aussagen: Beobachtungslernen von Placeboeffekten ist unter Laborbedingungen möglich und eine Aufmerksamkeitslenkung ist wichtig. Die Effektstärken reichen von klein bis groß. Die Effekte von klassischer Konditionierung und Beobachtungslernen sind vergleichbar. Live-Modelle, Videoaufnahmen und Bilder lösen ähnliche Effekte aus. Beobachtungslernen führt zu einer Erwartungsänderung. Diskussion Die vorliegende Evidenz liefert die Grundlage dafür, dass theoretisch und auch praktisch klinisch signifikante Effekte möglich sind. Weitere Studien sind nötig, um diese Aussagen verlässlich auch auf chronische Schmerzpatient:innen zu beziehen.
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Affiliation(s)
- Marie Schwartz
- Klinik für Anästhesiologie, Schmerzmedizin und Schmerzpsychologie, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Deutschland.
| | - J Stuhlreyer
- Klinik für Anästhesiologie, Schmerzmedizin und Schmerzpsychologie, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Deutschland
| | - R Klinger
- Klinik für Anästhesiologie, Schmerzmedizin und Schmerzpsychologie, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Deutschland
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33
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Schwartz M, Klinger R. Analgetische Placeboeffekte und Implikationen für die Behandlung chronischer Schmerzen. PSYCHOTHERAPEUT 2022. [DOI: 10.1007/s00278-022-00592-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
ZusammenfassungDie Behandlung von chronischen Schmerzen kann langwierig sein. Erste Ansätze zur Nutzung von Placeboeffekten bei der Behandlung von chronischen Schmerzen zeigen erfolgversprechende Ergebnisse und können dazu beitragen, die z. T. frustranen Therapieoptionen zu verbessern. Daher sollten Placeboeffekte zur verbesserten Behandlung genutzt werden. Im derzeitigen Modell zur Entstehung von Placeboeffekten spielt die Erwartung eine zentrale Rolle. Eine positive oder negative Erwartung wird durch psychologische und biologische „State“- und „Trait“-Faktoren der Patient:innen sowie die früheren Lernerfahrungen, die der:die Patient:in mitbringt, beeinflusst. Aus diesem Modell ergeben sich Implikationen für die klinische Praxis: Positive Erwartungen sollten unterstützt werden, wobei unrealistische Erwartungen wiederum den Placeboeffekt reduzieren. Negative Erwartungen sollten kritisch diskutiert werden. Es sollte im interdisziplinären Team eine gemeinsame Botschaft an die Patient:innen vermittelt werden. Open-Label-Placebos können als Intervention genutzt werden, um die Selbstwirksamkeit zu steigern.
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Lunde SJ, Vuust P, Garza-Villarreal EA, Kirsch I, Møller A, Vase L. Music-Induced Analgesia in Healthy Participants Is Associated With Expected Pain Levels but Not Opioid or Dopamine-Dependent Mechanisms. FRONTIERS IN PAIN RESEARCH 2022; 3:734999. [PMID: 35445208 PMCID: PMC9013883 DOI: 10.3389/fpain.2022.734999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 02/21/2022] [Indexed: 01/30/2023] Open
Abstract
Music interventions accommodate the profound need for non-pharmacological pain treatment. The analgesic effect of listening to music has been widely demonstrated across studies. Yet, the specific mechanisms of action have still to be elucidated. Although the endogenous opioid and dopamine systems have been suggested to play an important role, a direct link has not been established. In addition, the involvement of placebo mechanisms is likely while largely unexplored. We examined the analgesic effect of music in healthy participants (n = 48) using a 3 × 3 within-subjects design with pharmacological manipulations and a matched, auditory control for music. Participants were exposed to thermal pain stimuli while listening to three auditory excerpts: music (active condition), nature sound (matched, auditory contextual condition), and noise (neutral control condition). The participants rated their expected and perceived pain levels in relation to each of the auditory excerpts. To investigate the involvement of the endogenous opioid and dopamine systems, the test session was performed three times on separate days featuring a double-blind randomized oral administration of naltrexone (opioid antagonist), haloperidol (dopamine antagonist), and an inactive agent (control). Our results support an analgesic effect of music. Contrary to current hypotheses, neither of the antagonists attenuated the effect of music. Yet, the participants' expectations for pain relief predicted their perceived pain levels during the auditory excerpts—even when controlling for a gradual learning effect. In conclusion, we demonstrate that the analgesic effect of music is at least partially mediated by expectations of an analgesic effect—a core mechanism in placebo effects—but not by opioid and dopamine-dependent mechanisms.
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Affiliation(s)
- Sigrid Juhl Lunde
- Division for Psychology and Neuroscience, Department of Psychology and Behavioural Sciences, School of Business and Social Sciences, Aarhus University, Aarhus, Denmark
- *Correspondence: Sigrid Juhl Lunde
| | - Peter Vuust
- Center for Music in the Brain, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- The Royal Academy of Music Aarhus/Aalborg, Aarhus, Denmark
| | - Eduardo A. Garza-Villarreal
- Laboratorio Nacional de Imagenología por Resonancia Magnética, Institute of Neurobiology, Universidad Nacional Autonoma de Mexico Campus Juriquilla, Queretaro, Mexico
- Center of Functionally Integrative Neuroscience, Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Irving Kirsch
- Program in Placebo Studies and Therapeutic Encounter, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Arne Møller
- Center of Functionally Integrative Neuroscience, Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Nuclear Medicine and PET Center, Institute of Clinical Medicine, Aarhus University and University Hospital, Aarhus, Denmark
| | - Lene Vase
- Division for Psychology and Neuroscience, Department of Psychology and Behavioural Sciences, School of Business and Social Sciences, Aarhus University, Aarhus, Denmark
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Kleine-Borgmann J, Schmidt K, Scharmach K, Zunhammer M, Elsenbruch S, Bingel U, Forkmann K. Does pain modality play a role in the interruptive function of acute visceral compared with somatic pain? Pain 2022; 163:735-744. [PMID: 34338242 PMCID: PMC8929302 DOI: 10.1097/j.pain.0000000000002418] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 07/13/2021] [Accepted: 07/19/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT Acute pain captures attentional resources and interferes with ongoing cognitive processes, including memory encoding. Despite broad clinical implications of this interruptive function of pain for the pathophysiology and treatment of chronic pain conditions, existing knowledge exclusively relies on studies using somatic pain models. Visceral pain is highly prevalent and seems to be more salient and threatening, suggesting that the interruptive function of pain may be higher in acute visceral compared with somatic pain. Implementing rectal distensions as a clinically relevant experimental model of visceral pain along with thermal cutaneous pain for the somatic modality, we herein examined the impact of pain modality on visual processing and memory performance in a visual encoding and recognition task and explored the modulatory role of pain-related fear and expectation in 30 healthy participants. Despite careful and dynamically adjusted matching of stimulus intensities to perceived pain unpleasantness over the course of trials, we observed greater impairment of cognition performance for the visceral modality with a medium effect size. Task performance was not modulated by expectations or by pain-related fear. Hence, even at matched unpleasantness levels, acute visceral pain is capable of interfering with memory encoding, and this impact seems to be relatively independent of pain-related cognitions or emotions, at least in healthy individuals. These results likely underestimate the detrimental effect of chronic pain on cognitive performance, which may be particularly pronounced in acute and chronic visceral pain.
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Affiliation(s)
- Julian Kleine-Borgmann
- Center for Translational Neuro- and Behavioral Sciences, Department of Neurology, University Medicine Essen, Germany
- Translational Pain Research Unit, University Medicine Essen, Essen, Germany
| | - Katharina Schmidt
- Center for Translational Neuro- and Behavioral Sciences, Department of Neurology, University Medicine Essen, Germany
- Translational Pain Research Unit, University Medicine Essen, Essen, Germany
| | - Katrin Scharmach
- Center for Translational Neuro- and Behavioral Sciences, Department of Neurology, University Medicine Essen, Germany
| | - Matthias Zunhammer
- Center for Translational Neuro- and Behavioral Sciences, Department of Neurology, University Medicine Essen, Germany
| | - Sigrid Elsenbruch
- Translational Pain Research Unit, University Medicine Essen, Essen, Germany
- Department of Medical Psychology and Medical Sociology, Ruhr University Bochum, Bochum, Germany
| | - Ulrike Bingel
- Center for Translational Neuro- and Behavioral Sciences, Department of Neurology, University Medicine Essen, Germany
- Translational Pain Research Unit, University Medicine Essen, Essen, Germany
| | - Katarina Forkmann
- Center for Translational Neuro- and Behavioral Sciences, Department of Neurology, University Medicine Essen, Germany
- Translational Pain Research Unit, University Medicine Essen, Essen, Germany
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36
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Baker J, Gamer M, Rauh J, Brassen S. Placebo induced expectations of mood enhancement generate a positivity effect in emotional processing. Sci Rep 2022; 12:5345. [PMID: 35351936 PMCID: PMC8964732 DOI: 10.1038/s41598-022-09342-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 03/21/2022] [Indexed: 11/09/2022] Open
Abstract
A perceptual bias towards negative emotions is a consistent finding in mood disorders and a major target of therapeutic interventions. Placebo responses in antidepressant treatment are substantial, but it is unclear whether and how underlying expectancy effects can modulate response biases to emotional inputs. In a first attempt to approach this question, we investigated how placebo induced expectation can shape the perception of specific emotional stimuli in healthy individuals. In a controlled cross-over design, positive treatment expectations were induced by verbal instructions and a hidden training manipulation combined with an alleged oxytocin nasal spray before participants performed an emotion classification task on happy and fearful facial expressions with varying intensity. Analyses of response criterion and discrimination ability as derived from emotion-specific psychometric functions demonstrate that expectation specifically lowered participants’ threshold for identifying happy emotions in general, while they became less sensitive to subtle differences in emotional expressions. These indications of a positivity bias were directly correlated with participants’ treatment expectations as well as subjective experiences of treatment effects and went along with a significant mood enhancement. Our findings show that expectations can induce a perceptual positivity effect in healthy individuals which is probably modulated by top-down emotion regulation and which may be able to improve mood state. Clinical implications of these promising results now need to be explored in studies of expectation manipulation in patients with mood disorders.
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37
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Skvortsova A, Cohen Rodrigues T, de Buisonjé D, Kowatsch T, Santhanam P, Veldhuijzen DS, van Middendorp H, Evers A. Increasing the Effectiveness of a Physical Activity Smartphone Intervention With Positive Suggestions: Randomized Controlled Trial. J Med Internet Res 2022; 24:e32130. [PMID: 35230245 PMCID: PMC8924786 DOI: 10.2196/32130] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/29/2021] [Accepted: 12/07/2021] [Indexed: 01/19/2023] Open
Abstract
Background eHealth interventions have the potential to increase the physical activity of users. However, their effectiveness varies, and they often have only short-term effects. A possible way of enhancing their effectiveness is to increase the positive outcome expectations of users by giving them positive suggestions regarding the effectiveness of the intervention. It has been shown that when individuals have positive expectations regarding various types of interventions, they tend to benefit from these interventions more. Objective The main objective of this web-based study is to investigate whether positive suggestions can change the expectations of participants regarding the effectiveness of a smartphone physical activity intervention and subsequently enhance the number of steps the participants take during the intervention. In addition, we study whether suggestions affect perceived app effectiveness, engagement with the app, self-reported vitality, and fatigue of the participants. Methods This study involved a 21-day fully automated physical activity intervention aimed at helping participants to walk more steps. The intervention was delivered via a smartphone-based app that delivered specific tasks to participants (eg, setting activity goals or looking for social support) and recorded their daily step count. Participants were randomized to either a positive suggestions group (69/133, 51.9%) or a control group (64/133, 48.1%). Positive suggestions emphasizing the effectiveness of the intervention were implemented in a web-based flyer sent to the participants before the intervention. Suggestions were repeated on days 8 and 15 of the intervention via the app. Results Participants significantly increased their daily step count from baseline compared with 21 days of the intervention (t107=−8.62; P<.001) regardless of the suggestions. Participants in the positive suggestions group had more positive expectations regarding the app (B=−1.61, SE 0.47; P<.001) and higher expected engagement with the app (B=3.80, SE 0.63; P<.001) than the participants in the control group. No effects of suggestions on the step count (B=−22.05, SE 334.90; P=.95), perceived effectiveness of the app (B=0.78, SE 0.69; P=.26), engagement with the app (B=0.78, SE 0.75; P=.29), and vitality (B=0.01, SE 0.11; P=.95) were found. Positive suggestions decreased the fatigue of the participants during the 3 weeks of the intervention (B=0.11, SE 0.02; P<.001). Conclusions Although the suggestions did not affect the number of daily steps, they increased the positive expectations of the participants and decreased their fatigue. These results indicate that adding positive suggestions to eHealth physical activity interventions might be a promising way of influencing subjective but not objective outcomes of interventions. Future research should focus on finding ways of strengthening the suggestions, as they have the potential to boost the effectiveness of eHealth interventions. Trial Registration Open Science Framework 10.17605/OSF.IO/CWJES; https://osf.io/cwjes
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Affiliation(s)
- Aleksandrina Skvortsova
- Department of Psychology, McGill University, Montreal, QC, Canada.,Health, Medical and Neuropsychology, Faculty of Social and Behavioural Sciences, Leiden, Netherlands
| | - Talia Cohen Rodrigues
- Health, Medical and Neuropsychology, Faculty of Social and Behavioural Sciences, Leiden, Netherlands
| | - David de Buisonjé
- Health, Medical and Neuropsychology, Faculty of Social and Behavioural Sciences, Leiden, Netherlands
| | - Tobias Kowatsch
- Centre for Digital Health Interventions, Department of Management, Technology, and Economics, ETH Zurich, Zurich, Switzerland.,Centre for Digital Health Interventions, Institute of Technology Management, University of St.Gallen, St.Gallen, Switzerland
| | - Prabhakaran Santhanam
- Centre for Digital Health Interventions, Department of Management, Technology, and Economics, ETH Zurich, Zurich, Switzerland
| | - Dieuwke S Veldhuijzen
- Health, Medical and Neuropsychology, Faculty of Social and Behavioural Sciences, Leiden, Netherlands
| | - Henriët van Middendorp
- Health, Medical and Neuropsychology, Faculty of Social and Behavioural Sciences, Leiden, Netherlands
| | - Andrea Evers
- Health, Medical and Neuropsychology, Faculty of Social and Behavioural Sciences, Leiden, Netherlands.,Department of Psychiatry, Leiden University Medical Center, Leiden, Netherlands.,Medical Delta, Leiden University, Technical University Delft and Erasmus University, Leiden, Delft, Rotterdam, Netherlands
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38
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Schmidt K, Berding T, Kleine-Borgmann J, Engler H, Holle-Lee D, Gaul C, Bingel U. The beneficial effect of positive treatment expectations on pharmacological migraine prophylaxis. Pain 2022; 163:e319-e327. [PMID: 34010939 DOI: 10.1097/j.pain.0000000000002341] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 05/07/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT Migraine is one of the leading causes of years lived with disability and considered to be a major global health concern. Pharmacological preventive treatment often causes side effects that limit the adherence to longer-term treatment regimens. Both experimental and clinical evidence suggests that positive expectations can modulate pain and analgesic treatment effects. However, the role of expectations in migraine prophylactic treatment has not systematically been investigated. Here, we examined the influence of treatment expectation before commencing pharmacological preventive treatment on its efficacy and tolerability in N = 134 episodic (30%) and chronic migraine (70%) patients in a prospective, longitudinal observational study over the course of 6 months. The migraine prophylaxis reduced the number of headache and migraine days with acceptable tolerability. Positive treatment expectation was associated with a generally lower number of headache and migraine days and a stronger reduction in headache days over the course of the treatment in chronic but not in episodic migraine patients. Moreover, patients with prior treatment showed a stronger reduction in headache days with higher expectation as compared to patients without prior experience. Our results underscore the relevance of further exploring the role of treatment expectation and its systematic modulation in patients with migraine and other pain conditions.
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Affiliation(s)
- Katharina Schmidt
- Department of Neurology, Center for Translational Neuro- and Behavioural Sciences, University Medicine Essen, Essen, Germany
| | - Tobias Berding
- Department of Neurology, Center for Translational Neuro- and Behavioural Sciences, University Medicine Essen, Essen, Germany
| | - Julian Kleine-Borgmann
- Department of Neurology, Center for Translational Neuro- and Behavioural Sciences, University Medicine Essen, Essen, Germany
| | - Harald Engler
- Institute of Medical Psychology and Behavioral Immunobiology, Center for Translational Neuro-and Behavioural Sciences, University Medicine Essen, Essen, Germany
| | - Dagny Holle-Lee
- Department of Neurology, Center for Translational Neuro- and Behavioural Sciences, University Medicine Essen, Essen, Germany
| | - Charly Gaul
- Migraine and Headache Clinic Königstein, Königstein, Germany
| | - Ulrike Bingel
- Department of Neurology, Center for Translational Neuro- and Behavioural Sciences, University Medicine Essen, Essen, Germany
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Temporal expectancy induced by the mere possession of a placebo analgesic affects placebo analgesia: preliminary findings from a randomized controlled trial. Sci Rep 2022; 12:1395. [PMID: 35082351 PMCID: PMC8792021 DOI: 10.1038/s41598-022-05537-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 01/10/2022] [Indexed: 11/21/2022] Open
Abstract
Research on placebo analgesia usually shows that people experienced a reduction in pain after using a placebo analgesic. An emerging line of research argues that, under some circumstances, merely possessing (but not using) a placebo analgesic could induce placebo analgesia. The current study investigates how temporary expectation of pain reduction associated with different forms of possessing a placebo analgesic affects pain outcomes. Healthy participants (n = 90) were presented with a vial of olive oil (placebo), described as a blended essential oil that blocks pain sensations upon nasal inhalation, and were asked to anticipate the benefits of such analgesic oil to the self (such as anticipating the analgesic oil to reduce their pain). Participants were randomized into one of three different possession conditions: physical-possession condition (participants possessed a tangible placebo analgesic oil, inducing an expectation to acquire analgesic benefit early upon the experience of pain), psychological-possession condition (participants possessed a coupon, which can be redeemed for a placebo analgesic oil, inducing an expectation to acquire analgesic benefit later upon the experience of pain), or no-possession condition. Participants did a cold pressor test (CPT) to experience experimentally-induced pain on their non-dominant hand. Their objective physical pain responses (pain-threshold and pain-tolerance), and subjective psychological pain perception (pain intensity, severity, quality, and unpleasantness) were measured. Results revealed that participants in the physical-possession condition reported greater pain-threshold, F(2, 85) = 6.65, p = 0.002, and longer pain-tolerance, F(2, 85) = 7.19, p = 0.001 than participants in the psychological-possession and no-possession conditions. No significant group difference was found in subjective pain perception. The results of this study can advance knowledge about pain mechanisms and novel pain management.
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40
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How do placebo effects contribute to mindfulness-based analgesia? Probing acute pain effects and interactions using a randomized balanced placebo design. Pain 2022; 163:1967-1977. [PMID: 35082252 DOI: 10.1097/j.pain.0000000000002593] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 12/14/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT Recent sham-controlled studies suggest placebo effects contribute to acute pain relief following mindfulness interventions. However, the specific effects of mindfulness processes and their interaction with placebo effects remain unclear. This study aimed to characterize the role of mindfulness and placebo processes underlying mindfulness-based pain attenuation. Both treatment (focused-attention mindfulness vs sham) and instruction ("told mindfulness" vs "told sham") were manipulated in a balanced placebo design. Changes in acute heat pain were evaluated in 153 healthy adults randomized to receive 6 x 20 minutes of one of the four treatment by instruction interventions or no treatment. Participants receiving any intervention demonstrated improved pain outcomes (unpleasantness, intensity and tolerance) relative to no treatment. The instruction manipulation increased expectation for pain relief in those told mindfulness relative to told sham, but there were no main effects or interactions of treatment or instruction on pain outcomes. However, irrespective of actual intervention received, the belief of receiving mindfulness predicted increased pain threshold and tolerance, with expectancy fully mediating the effect on pain tolerance. These findings suggest a lack of specific effects of mindfulness and instruction on acute pain. Nonetheless, participants' expectancies and beliefs about the treatment they received did predict pain relief. Together with the overall improvement following any intervention, these findings suggest that expectancy and belief may play a stronger role in attenuating acute pain in novices following brief mindfulness interventions than the actual mindfulness-specific processes or instructions delivered.
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Rosenkjær S, Lunde SJ, Kirsch I, Vase L. Expectations: How and when do they contribute to placebo analgesia? Front Psychiatry 2022; 13:817179. [PMID: 36147975 PMCID: PMC9488555 DOI: 10.3389/fpsyt.2022.817179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 08/16/2022] [Indexed: 11/20/2022] Open
Abstract
In placebo research, expectations are highlighted as one of the most influential subjective factors. While some studies have shown a relationship between expectations and pain relief, others have not. However, little is known about how methods of assessment of expectations may affect these conclusions. One of the fundamental considerations is that participants in placebo trials rate their expectations when prompted to rate them on scales in advance, but are less likely to report their prior expectations, when asked to report their experience retroactively in an unprompted manner, often expressing, for example, prior hope or wishes of recovery. This article presents previously unpublished data to elucidate and explore the concepts highlighted by individuals in a placebo analgesia trial when assessed in a prompted and unprompted manner. The data corroborates the role of expectations involved in placebo effects, particularly in placebo analgesia. Thus, the question may be a matter of how and when expectations contribute to placebo effects, rather than if.
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Affiliation(s)
- Sophie Rosenkjær
- Department of Psychology and Behavioural Sciences, School of Business and Social Sciences, Aarhus University, Aarhus, Denmark
| | - Sigrid Juhl Lunde
- Department of Psychology and Behavioural Sciences, School of Business and Social Sciences, Aarhus University, Aarhus, Denmark
| | - Irving Kirsch
- Program in Placebo Studies, Beth Israel Deaconess Medical Center Harvard Medical School, Boston, MA, United States
| | - Lene Vase
- Department of Psychology and Behavioural Sciences, School of Business and Social Sciences, Aarhus University, Aarhus, Denmark
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Benson S, Theysohn N, Kleine-Borgmann J, Rebernik L, Icenhour A, Elsenbruch S. Positive Treatment Expectations Shape Perceived Medication Efficacy in a Translational Placebo Paradigm for the Gut-Brain Axis. Front Psychiatry 2022; 13:824468. [PMID: 35401247 PMCID: PMC8987023 DOI: 10.3389/fpsyt.2022.824468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 03/01/2022] [Indexed: 11/13/2022] Open
Abstract
Placebo research has established the pivotal role of treatment expectations in shaping symptom experience and patient-reported treatment outcomes. Perceived treatment efficacy constitutes a relevant yet understudied aspect, especially in the context of the gut-brain axis with visceral pain as key symptom. Using a clinically relevant experimental model of visceral pain, we elucidated effects of pre-treatment expectations on post-treatment perceived treatment efficacy as an indicator of treatment satisfaction in a translational placebo intervention. We implemented positive suggestions regarding intravenous treatment with a spasmolytic drug (in reality saline), herein applied in combination with two series of individually calibrated rectal distensions in healthy volunteers. The first series used distension pressures inducing pain (pain phase). In the second series, pressures were surreptitiously reduced, modeling pain relief (pain relief phase). Using visual analog scales (VAS), expected and perceived treatment efficacy were assessed, along with perceived pain intensity. Manipulation checks supported that the induction of positive pre-treatment expectations and the modeling of pain relief were successful. Generalized Linear Models (GLM) were implemented to assess the role of inter-individual variability in positive pre-treatment expectations in perceived treatment efficacy and pain perception. GLM indicated no association between pre-treatment expectations and perceived treatment efficacy or perceived pain for the pain phase. For the relief phase, pre-treatment expectations (p = 0.024) as well as efficacy ratings assessed after the preceding pain phase (p < 0.001) were significantly associated with treatment efficacy assessed after the relief phase, together explaining 54% of the variance in perceived treatment efficacy. The association between pre-treatment expectations and perceived pain approached significance (p = 0.057) in the relief phase. Our data from an experimental translational placebo intervention in visceral pain support that reported post-treatment medication efficacy is shaped by pre-treatment expectations. The observation that individuals with higher positive expectations reported less pain and higher treatment satisfaction after pain relief may provide first evidence that perceived symptom improvement may facilitate treatment satisfaction. The immediate experience of symptoms within a given psychosocial treatment context may dynamically change perceptions about treatment, with implications for treatment satisfaction, compliance and adherence of patients with conditions of the gut-brain axis.
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Affiliation(s)
- Sven Benson
- Institute for Medical Education, Center for Translational Neuro- and Behavioral Sciences, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.,Institute of Medical Psychology and Behavioral Immunobiology, Center for Translational Neuro- and Behavioral Sciences, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Nina Theysohn
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Julian Kleine-Borgmann
- Department of Neurology, Center for Translational Neuro- and Behavioral Sciences, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Laura Rebernik
- Institute of Medical Psychology and Behavioral Immunobiology, Center for Translational Neuro- and Behavioral Sciences, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Adriane Icenhour
- Department of Medical Psychology and Medical Sociology, Ruhr University Bochum, Bochum, Germany
| | - Sigrid Elsenbruch
- Department of Neurology, Center for Translational Neuro- and Behavioral Sciences, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.,Department of Medical Psychology and Medical Sociology, Ruhr University Bochum, Bochum, Germany
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Meeuwis SH, van Middendorp H, Veldhuijzen DS, Evers AWM. Associations Between Interindividual Differences, Expectations and Placebo and Nocebo Effects in Itch. Front Psychol 2021; 12:781521. [PMID: 34966334 PMCID: PMC8711701 DOI: 10.3389/fpsyg.2021.781521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 11/19/2021] [Indexed: 11/13/2022] Open
Abstract
Introduction: Placebo and nocebo effects are positive and negative health outcomes that can be elicited by the psychosocial context. They can be mediated by expectations, and may emerge in somatic symptoms even when people are aware of these effects. Interindividual differences (e.g., in personality, affective states) could impact placebo and nocebo responding, but findings are inconsistent. Methods: The current work examined expectation as a mediator of the association between verbal placebo and nocebo suggestions (VSs) and histamine-induced itch across three experimental studies. Moreover, we examined whether interindividual differences (e.g., in optimism, neuroticism, behavioral activation system (BAS), body ignorance) modulated: (1) the direct association between VSs and itch (direct moderation), and (2) the indirect, expectation-mediated association between VSs and itch (moderated mediation). Positive VSs were compared to neutral instructions (Study 1; n = 92) or negative VSs (Studies 2+3; n = 203) in an open-label (i.e., explaining placebo and nocebo effects) or closed-label (concealed) context using PROCESS. First, mediation of VSs effects on itch by expectations was tested. Next, moderation by individual traits was explored using conditional process analyses. Results: The effects of VSs on itch were significantly mediated by expectation in Study 1 and in the open-label (but not closed-label) contexts of Studies 2 and 3. Ignorance of bodily signals marginally moderated the direct effects of VSs on itch when closed-label suggestions were given: at low levels of body ignorance, effects of positive and negative VSs were stronger. Moreover, moderated mediation was observed in the open-label groups of Studies 2 and 3: The expectation-mediated effects of VSs on itch were stronger when BAS drive was lower. Conclusion: Overall, the effects of VSs on itch were mediated by expectations in the open-label, but not the closed-label context. Moreover, the current work suggests that placebo and nocebo effects may be moderated by ignorance of bodily signals and the BAS. There was limited evidence that other interindividual differences modulated placebo and nocebo responding in itch.
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Affiliation(s)
- Stefanie H Meeuwis
- Pain Research Group, Institute of Psychology, Jagiellonian University, Kraków, Poland.,Health, Medical and Neuropsychology Unit, Institute of Psychology, Faculty of Social and Behavioural Sciences, Leiden University, Leiden, Netherlands.,Leiden Institute for Brain and Cognition, Leiden University Medical Center, Leiden, Netherlands
| | - Henriët van Middendorp
- Health, Medical and Neuropsychology Unit, Institute of Psychology, Faculty of Social and Behavioural Sciences, Leiden University, Leiden, Netherlands.,Leiden Institute for Brain and Cognition, Leiden University Medical Center, Leiden, Netherlands
| | - Dieuwke S Veldhuijzen
- Health, Medical and Neuropsychology Unit, Institute of Psychology, Faculty of Social and Behavioural Sciences, Leiden University, Leiden, Netherlands.,Leiden Institute for Brain and Cognition, Leiden University Medical Center, Leiden, Netherlands
| | - Andrea W M Evers
- Health, Medical and Neuropsychology Unit, Institute of Psychology, Faculty of Social and Behavioural Sciences, Leiden University, Leiden, Netherlands.,Leiden Institute for Brain and Cognition, Leiden University Medical Center, Leiden, Netherlands.,Department of Psychiatry, Leiden University Medical Center, Leiden, Netherlands.,Medical Delta Healthy Society, Leiden University, Technical University Delft, Erasmus University Rotterdam, Rotterdam, Netherlands
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[Results of a pilot study on the role of therapy expectation in interdisciplinary multimodal pain therapy for chronic back pain]. Schmerz 2021; 36:172-181. [PMID: 34618234 PMCID: PMC9156493 DOI: 10.1007/s00482-021-00590-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 08/08/2021] [Accepted: 08/16/2021] [Indexed: 11/17/2022]
Abstract
Hintergrund Chronische Rückenschmerzen sind eine schwerwiegende und global sehr häufig auftretende Erkrankung mit enormen persönlichen sowie sozioökonomischen Auswirkungen. Die interdisziplinäre multimodale Schmerztherapie (IMST) ist eines der wenigen evidenzbasierten Behandlungsverfahren für chronische Schmerzen. Obwohl bekannt ist, dass Schmerzen sowie deren Chronifizierung und Behandlung von den persönlichen Erwartungen der Patienten beeinflusst werden, gibt es wenige etablierte Interventionen oder Richtlinien für eine aktive Modulation dieses Effekts. Ziel der Arbeit Wir möchten mit dieser Arbeit die Rolle der Erwartung als Prädiktor für Schmerzen sowie schmerzbezogene Beeinträchtigung in der klinischen Praxis verdeutlichen und präsentieren hierzu beispielhaft explorative Pilotdaten einer Beobachtungskohorte unserer Klinik. Material und Methoden Die Untersuchung zeigt erste Daten einer prospektiven longitudinalen Beobachtungsstudie bestehend aus bis zu 41 Patienten mit chronischen Rückenschmerzen, die im Setting einer IMST am Essener Rückenschmerz-Zentrum behandelt wurden. Es wurden Daten zum Zeitpunkt der Aufnahme (T0) und der Entlassung (T1) sowie drei Monate nach Therapieende (T2) erhoben. Primäre Endpunkte waren die Schmerzintensität und die Schmerzbeeinträchtigung. Zusätzlich erfassten wir die Therapieerwartung zum Zeitpunkt der Aufnahme als möglichen Prädiktor. Die Bedeutung der vor der Therapie erhobenen Therapieerwartung wurde mittels linearer Regression erfasst. Ergebnisse Die IMST führte zu einer signifikanten Besserung in Bezug auf die Schmerzintensität und -beeinträchtigung. Der Effekt auf die Schmerzintensität war über den Zeitraum von drei Monaten nach Therapieende anhaltend und die Beeinträchtigung sank in diesem Zeitraum weiter signifikant. Diskussion Erwartung war ein signifikanter Prädiktor für die Abnahme der Schmerzintensität und erklärte ca. 15 % der Varianz. In der klinischen Praxis sollten daher valide Methoden etabliert werden, negative Erwartungen zu reduzieren und positive Erwartungen zu fördern.
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Bagarić B, Jokić-Begić N, Sangster Jokić C. The Nocebo Effect: A Review of Contemporary Experimental Research. Int J Behav Med 2021; 29:255-265. [PMID: 34405336 DOI: 10.1007/s12529-021-10016-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/06/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Nocebo effect, the occurrence of adverse symptoms fallowing an inactive treatment, is much less understood than its opposite, placebo effect. This systematic review of contemporary studies exploring the nocebo effect focuses on (1) the mechanisms underlying the nocebo effect, (2) the characteristics of participants exhibiting a more intensive nocebo response, and (3) the circumstances that might reduce or prevent the nocebo effect. METHOD We included experimental nocebo studies published in English that examined the occurrence of nocebo in various domains (i.e., types of sensations and symptoms) and different levels of nocebo response (e.g., performance, self-assessment) and in different populations of participants (healthy and clinical). Using Web of Science, PsycInfo and PubMed, we identified 25 papers (35 studies) that met our criteria with a total of N = 2614 participants, mostly healthy volunteers. RESULTS Nocebo was invoked by manipulating expectations, conditioning or both. A narrative content synthesis was conducted. Nocebo was successfully invoked in a range of domains (e.g., pain, nausea, itch, skin dryness) and levels (sensory, affective, psychological, and behavioral). Various characteristics of the conditioning procedure and participants' emotions, expectations, and dispositions are found to be related to the nocebo response, which sheds insight into the possible mechanisms of the nocebo effect. Strategies successful and unsuccessful in diminishing the nocebo response are identified. Limitations of this review include a small sample of studies. CONCLUSION These findings point to the universality of nocebo as well as to the importance of participant characteristics and experimental circumstances in invoking the nocebo effect. Further research should examine the nocebo effect in clinical populations.
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Affiliation(s)
- Branka Bagarić
- Croatian Association for Behavioral-Cognitive Therapies (CABCT), Šenoina 25, 10 000, Zagreb, Croatia.
| | - Nataša Jokić-Begić
- Department of Psychology, Faculty of Humanities and Social Sciences, University of Zagreb, Ivana Lučića 3, 10 000, Zagreb, Croatia
| | - Claire Sangster Jokić
- Department of Occupational Therapy, University of Applied Health Sciences, Mlinarska 38, 10 000, Zagreb, Croatia
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Peterson S, Young J, King V, Meadows J. Patient Expectations for Synchronous Telerehabilitation Visits: A Survey Study of Telerehabilitation-Naive Patients. Telemed J E Health 2021; 28:422-432. [PMID: 34197221 DOI: 10.1089/tmj.2021.0083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Background: The current study evaluated patient expectations for synchronous telerehabilitation. Because the coronavirus disease 2019 (COVID-19) pandemic decreased regulatory barriers and increased accessibility of telehealth, improved understanding of expectations may direct future educational efforts, improve implementation strategies, and inform future analyses of consumer adoption and utilization of telehealth. Methods: A cross-sectional survey design was used to measure ideal expectations (what they want to happen) and realistic expectations (what they think will happen) of telerehabilitation-naive patients for synchronous telerehabilitation. Participants were recruited through e-mail and social media and in person from seven outpatient private practice physical therapy clinics across the United States. Patients completed an online anonymous adaptation of the Patients' Expectations Questionnaire (PEQ) and were asked whether they expected synchronous telerehabilitation to benefit them personally. Open-ended responses were collected and analyzed for categories and themes. Results: Of 178 participants, the greatest mean difference between ideal and realistic expectations among PEQ subscales was for outcomes (0.49; 95% confidence interval [CI], 0.37-0.60), and the greatest mean difference among individual items was for symptom reduction (0.53; 95% CI, 0.41-0.66). Although participants appeared to appreciate the value of telerehabilitation visits, with 69.7% indicating that it would benefit them personally, many expressed a preference for face-to-face visits when possible. Discussion: Expectations were mostly positive. Lower outcomes expectations may be a potential barrier to adoption and utilization of telehealth and other types of digital physical therapy in some patients. Conclusions: To improve beliefs and address potential barriers, physical therapy clinicians should discuss expectations with patients before recommending telerehabilitation visits.
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Affiliation(s)
- Seth Peterson
- The Motive Physical Therapy Specialists, Oro Valley, Arizona, USA.,Arizona School of Health Sciences, A.T. Still University, Mesa, Arizona, USA
| | - Jodi Young
- Arizona School of Health Sciences, A.T. Still University, Mesa, Arizona, USA
| | - Visnja King
- King Physical Therapist North Huntingdon, North Huntingdon, Pennsylvania, USA.,Department of Physical Therapy, South College, Knoxville, Tennessee, USA
| | - Jeff Meadows
- AntiFragile Physical Therapy, Asheville, North Carolina, USA
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Speldewinde GC, Panwar CE. Patient Expectancy Does Not Predict Success or Failure of Thermal Neurotomy for Persistent Zygapophysial and Sacroiliac Joint Pain. PAIN MEDICINE 2021; 22:1930-1939. [PMID: 33830246 DOI: 10.1093/pm/pnab133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE The placebo effect is important in determining the outcome of the treatment of pain for which expectancy and context are the main contributors. The variable success of thermal neurotomy spinal pain procedures is often seen as evidence of the placebo effect. Conversely, proponents of pain procedures explain poorer outcomes by technical procedure deficiencies, including inadequate diagnosis. This cohort study set out to determine whether patient expectancy is a contributing factor in the outcome of thermal neurotomy to the cervical, thoracic, and lumbar zygapophysial and sacroiliac joints. DESIGN This single-practitioner, single-site retrospective analysis of prospectively gathered cohort data of 549 patients evaluated the impact of patient preprocedure expectancy (rated on a simple 0-10 or 0-4 numerical rating scale) on outcomes in a large consecutive series of patients who had undergone thermal neurotomy treatment between 2009 and 2019. In addition, a portion of patients were asked to what extent they hoped for or desired a good outcome. RESULTS Successful pain relief (≥75% reduction from baseline) was not associated with a higher preprocedure expectancy than were failed procedures. Hope and desire demonstrated no impact on the positive or negative impact of the procedure. CONCLUSIONS Altogether, patient expectation of outcome, hope, and desire are not associated with the outcome of effective pain relief by thermal neurotomy that has been performed to the appropriate and commonly available technical standards. Further work is needed to determine the influence of patient expectation across a range of pain intervention modalities.
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Affiliation(s)
- G C Speldewinde
- Capital Pain & Rehabilitation Clinic, Deakin, ACT, Australia
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Sondermann W, Reinboldt-Jockenhöfer F, Dissemond J, Pfaar O, Bingel U, Schedlowski M. Effects of Patients' Expectation in Dermatology: Evidence from Experimental and Clinical Placebo Studies and Implications for Dermatologic Practice and Research. Dermatology 2021; 237:857-871. [PMID: 33498052 DOI: 10.1159/000513445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 11/28/2020] [Indexed: 11/19/2022] Open
Abstract
Patients' expectations towards the benefit of a treatment are key determinants of placebo responses and can affect the development and course of medical conditions and the efficacy and tolerability of active medical treatment. The mechanisms mediating these placebo and nocebo effects have been best described in the field of experimental pain and placebo analgesia. However, also in dermatology experimental and clinical studies demonstrate that various skin diseases such as inflammatory dermatoses and allergic reactions can be modulated by patients' expectations. Dermatologists should consider the important modulatory role of patients' expectations on the efficacy and tolerability of specific treatments and the key role of verbal information, patients' prior treatment experiences (associative learning), and the quality and quantity of doctor-patient communication in shaping treatment expectation. As a consequence, techniques aiming at maximizing patients' expectation effects should be implemented into daily clinical routine. By contrast, in clinical studies expectation effects should be maximally controlled and harmonized to improve the "assay sensitivity" to detect new compounds. Further translational studies, also in dermatoses that have not been investigated yet, are needed to better characterize the mechanisms underlying patients' expectation and to gain further insights into potential clinical implications of these effects in dermatologic conditions. Therefore, in this review, we provide a brief overview on the concept of expectation effects on treatment outcome in general, summarize what is already known about this topic for dermatologic diseases, and finally present the relevance of this topic in clinical dermatology.
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Affiliation(s)
- Wiebke Sondermann
- Department of Dermatology, Venereology, and Allergology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany,
| | - Finja Reinboldt-Jockenhöfer
- Department of Dermatology, Venereology, and Allergology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Joachim Dissemond
- Department of Dermatology, Venereology, and Allergology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Oliver Pfaar
- Section of Rhinology and Allergy, Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Marburg, Philipps University Marburg, Marburg, Germany
| | - Ulrike Bingel
- Department of Neurology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Manfred Schedlowski
- Institute of Medical Psychology and Behavioral Immunobiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.,Department of Clinical Neuroscience, Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, Sweden
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Barrington MJ. Erector spinae plane block: did low p values overstate the evidence against the null hypothesis and distract us from clinically unimportant effects? Reg Anesth Pain Med 2020; 46:1-2. [PMID: 33168650 DOI: 10.1136/rapm-2020-102152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/07/2020] [Accepted: 10/09/2020] [Indexed: 11/04/2022]
Affiliation(s)
- Michael John Barrington
- Department of Anaesthesia and Acute Pain Medicine, St Vincent's Hospital, Melbourne, Melbourne, VIC, Australia .,Department of Medicine & Radiology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC, Australia
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An introduction to the Biennial Review of Pain. Pain 2020; 161 Suppl 1:S1-S2. [DOI: 10.1097/j.pain.0000000000001979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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