The challenge of diagnosing non-specific, functional, and somatoform disorders: A systematic review of barriers to diagnosis in primary care

Somatic symptoms in the general population of Spain: Validation and normative data of the Patient Health Questionnaire-15 (PHQ-15)

OBJECTIVE

The Patient Health Questionnaire (PHQ-15) has been widely used to assess somatic symptoms. This study aimed to analyze the psychometric properties of the Spanish version of the PHQ-15, its structure and score distribution across demographic variables in a Spanish sample. In addition, we examined variations in somatic symptoms among different demographic subgroups.

METHOD

1495 individuals from the Spanish population answered a series of self-reported measures, including PHQ-15. To examine the factorial structure of the PHQ-15, Confirmatory Factor Analysis (CFA) was performed. Additionally, a bifactor CFA model was examined using the Exploratory Structural Equation Modeling (ESEM) framework.

RESULTS

Women showed more somatic symptoms than men, and younger individuals showed more somatic symptoms than the older ones. It was also revealed positive associations between somatic symptoms and levels of depression, anxiety, and suspiciousness, while negative associations were found between somatic symptoms and perceived resilience and happiness. Regarding the factorial structure of the PHQ-15, although the one-factor and bifactor models were suitable, the bifactor model underscores the presence of a robust general factor.

LIMITATIONS

It is a cross-sectional study, not including non-institutionalized individuals.

CONCLUSION

Somatic symptoms are more frequent in women and younger individuals. Furthermore, the presence of physical symptoms is associated to other psychological aspects, such as depression or anxiety. Finally, bifactor model was the most appropriate to explain the factorial structure of the PHQ-15.

Exploring Associations of Somatic Symptom Disorder with Personality Dysfunction and Specific Maladaptive Traits

INTRODUCTION

According to ICD-11, personality disorders (PDs) are defined by the severity of self and interpersonal dysfunction in terms of personality functioning (PF) and an optional assessment of specific maladaptive personality trait expressions. Also, somatoform disorders are replaced by somatic symptom disorder (SSD). This study examines associations using the novel diagnostic criteria of SSD in an unselected primary care sample, PF, and maladaptive traits in patients with and without SSD.

METHODS

An anonymized cross-sectional study was conducted. A questionnaire including SSD-12 (Somatic Symptom Disorder B Criteria Scale-12) and PHQ-15 (Patient Health Questionnaire-15), LPFS-BF 2.0 (Level of Personality Functioning Scale - Brief Form) and PID-5BF+M (Modified Personality Inventory for DSM-5 - Brief Form Plus) was used. A bifactor (S-1) model was calculated with PF (reference for general factor) and personality traits (specific factors) to estimate associations between PF, specific maladaptive personality traits, and SSD. Differences in personality scales between SSD and non-SSD patients were calculated with the Mann-Whitney U test.

RESULTS

A total of 624 patients in six general practices participated (mean age 47 years; 60.4% female). SSD-12 and PHQ-15, respectively, showed significant associations with PF (γ = 0.51; γ = 0.48; p < 0.001), negative affectivity (γ = 0.50; γ = 0.38, p < 0.001) and psychoticism (γ = 0.29; γ = 0.28; p < 0.010). Besides, SSD-12 was significantly associated with disinhibition (γ = -0.38; p < 0.010) and anankastia (γ = -0.16; p < 0.010). Patients with SSD showed significantly impaired PF and maladaptive traits in all scales (p < 0.001).

CONCLUSION

Impaired PF explains moderate to large amounts of the SSD symptoms and maladaptive personality traits negative affectivity, psychoticism, disinhibition, and anankastia show specific associations beyond PF. An in-depth understanding of these relations might be helpful to improve doctor-patient communication and treatment in SSD.

Healthcare professionals' views on factors influencing persistent somatic symptoms - ARISE-HCP online survey across countries

OBJECTIVE

The Health Care Online Survey Europe-Healthcare Professionals (ARISE-HCP) cross-sectionally investigated healthcare professionals' (HCPs) views on healthcare factors influencing the symptom course of persistent somatic symptoms (PSS) across four European countries.

METHODS

An online survey was developed for HCPs experienced in PSS care in Germany, Italy, Poland, and the Netherlands. The study employed a mixed-methods approach. Quantitatively, it assessed HCPs' perspectives on training, tools, and consultation times. Qualitatively, it explored their perceptions of healthcare-related factors influencing the PSS symptom course and systemic barriers encountered in treatment and diagnosis.

RESULTS

Overall, 258 HCPs participated: 152 from the Netherlands, 46 from Germany, 30 from Italy, and 30 from Poland (67% female, mean age = 47.68 ± 11.64 years). HCPs' views on PSS training, tool adequacy, and consultation time sufficiency differed significantly. Regarding symptom persistence and deterioration, HCPs from Italy and Poland highlighted access-related issues, whereas German and Dutch HCPs focused on care implementation. Across all countries, interdisciplinary collaboration was mentioned as important for symptom improvement. A more holistic approach was advocated, emphasizing the need for comprehensive PSS-focused training and the integration of these practices in care delivery, service coordination, and patient engagement.

CONCLUSION

Healthcare factors associated with the course of PSS and systemic treatment and diagnosis barriers varied across different countries, highlighting the importance of considering country-specific factors in managing PSS. Taking tailored measures to enhance multidisciplinary collaboration and HCP education is essential for improving patient outcomes, and sharing knowledge about effective healthcare practices across countries can improve patient care. Future research should focus on identifying systemic barriers to optimal care and developing country-specific interventions.

[Conclusion instead of exclusion-The clinical diagnosis of functional movement disorders]

Functional neurological movement disorders are common in neurological practice and lead to a high degree of impairment and chronification. Affected patients usually receive a diagnosis with considerable delay and often do not get disease-specific treatment. The reasons for this delay are related to extensive diagnostic measures to exclude other nonfunctional neurological diseases. As a consequence, functional movement disorders are typically communicated as diagnoses of exclusion, which makes it difficult for patients to understand and accept the diagnosis. This is particularly unfortunate, because in the majority of patients the diagnosis can be made with confidence based on clinical features, i.e., inconsistency and incongruence. The clarification of the symptoms and the resulting treatment options should be supplemented by patient-friendly explanations of the pathophysiological basis of the disease. In this way, patients are enabled to understand and accept the diagnosis. Moreover, it can put an end to the search for a diagnosis, which can sometimes take decades, and paves the way for treatment. Thus, the diagnosis by exclusion itself becomes the starting point for treatment and can itself have a therapeutic effect.

Linguistic markers of anxiety and depression in Somatic Symptom and Related Disorders: Observational study of a digital intervention

BACKGROUND

Somatic Symptom and Related Disorders (SSRD), including chronic pain, result in frequent primary care visits, depression and anxiety symptoms, and diminished quality of life. Treatment access remains limited due to structural barriers and functional impairment. Digital delivery offers to improve access and enables transcript analysis via Natural Language Processing (NLP) to inform treatment. Therefore, we investigated asynchronous message-delivered SSRD treatment, and used NLP methods to identify symptom reduction markers from emotional valence.

METHODS

173 individuals diagnosed with SSRD received interventions from licensed therapists via messaging 5 days/week for 8 weeks. Depression and anxiety symptoms were measured with the PHQ-9 and GAD-7 from baseline every three weeks. Symptoms trajectories were identified using unsupervised random forest clustering. Emotional valence expressed and use of emotional words were extracted from patients' de-identified transcripts, respectively using VADER and NCR Lexicon. Valence differences were examined using logistic regression.

RESULTS

Two subpopulations were identified showing symptoms Improvement (n = 72; 41.62 %) and non-response (n = 101; 58.38 %). Improvement patients expressed more positive valence in the first week of treatment (OR = 1.84, CI: 1.12-3.02; p = .015) and were less likely to express negative valence by the end of treatment (OR = 0.05; CI: 0.30-0.83; p = .008). Non-response patients used more negative valence words, including pain.

LIMITATIONS

Findings were derived from observational data obtained during an ecological intervention, without the inclusion of a control group.

CONCLUSIONS

NLP identified linguistic markers distinguishing changes in anxiety and depression symptoms over treatment. Digital interventions offer new forms of delivery and provide the opportunity to automatically collect data for linguistic analysis.

Applying hypnotic associative - dissociative techniques in psychotherapy for psychosomatic symptoms

Patients experiencing psychosomatic symptoms frequently have difficulty obtaining correct treatment. They are often reluctant to partially attribute their symptoms to psychological factors and, as a result, delay referrals to mental health professionals. Furthermore, the dropout rate from therapy is high and relapses are common. Hypnosis is a complex psycho-physiological phenomenon. Hence, hypnotic psychotherapy may play an important role in managing and treating psychosomatic symptoms and disorders that involve both the mind and body. In the current study, we propose a clinically oriented, four-phase, hypnotic approach, the hypnotic associative-dissociative approach (HADA), which may be useful in encouraging more patients with psychosomatic problems to engage in psychotherapy, thereby achieving effective long-term effects.

Clinical skills development for healthcare practitioners working with patients with persistent physical symptoms (PPS) in healthcare settings: a systematic review and narrative synthesis

BACKGROUND

The complexity and uncertainty around Persistent Physical Symptoms (PPS) make it difficult to diagnose and treat, particularly under time-constrained consultations and limited knowledge. Brief interventions that can be utilised in day-to-day practice are necessary to improve ways of managing PPS. This review aimed to establish (i) what training primary and secondary healthcare practitioners have undertaken to develop their clinical skills when working with PPS, (ii) what training techniques or theoretical models have been used within these interventions, and (iii) how effective was the training.

METHOD

A systematic literature search was undertaken on eight databases to identify professional development interventions for healthcare practitioners working with PPS, were of any study design, and at a minimum were single measure studies (i.e., training outcome alone). Studies were assessed using the Mixed Methods Appraisal Tool (MMAT) and narratively synthesised.

RESULTS

Despite high methodological heterogeneity across the six included studies, they all aimed to improve healthcare practitioners' communication skills through educational (theory, awareness, attitudes, assessment, treatment, and management of PPS) and experiential (role play) learning.

CONCLUSIONS

The review findings demonstrate that developing healthcare practitioners' communicative behaviours led to increased confidence and self-efficacy when working with PPS, which facilitated improved consultations and improvements on some patient outcomes. Barriers to the uptake of training programmes and implementation into daily clinical practice are discussed, including the need for PPS to be formally implemented into undergraduate teaching and post-qualification continuous professional development.

TRIAL REGISTRATION

This review was registered at PROSPERO [CRD42022315631] prior to the review starting.

Public and patient involvement in the development of an internet-based guide for persistent somatic symptoms (GUIDE.PSS): A qualitative study on the needs of those affected

BACKGROUND

Persistent somatic symptoms (PSS) frequently remain under-treated in health care settings. Evidence-based services that lead affected individuals to early guideline-based care are currently missing. This study aimed to identify the needs of those affected concerning an internet-based guide. The second aim was to evaluate public and patient involvement (PPI).

METHODS

Participants experiencing PSS for at least 6 months were recruited via hospitals, psychotherapeutic practices and self-help organizations. Qualitative data were gathered via ideation discussions and prioritization tasks. Thematic analysis was conducted to gain insight on the needs of people with lived experiences. PPI was quantitatively evaluated with the Public and Patient Engagement Evaluation Tool.

RESULTS

A total of 12 individuals participated (eight females, ages 22-66 years, duration of symptoms 1-43 years). Participants wanted to feel more supported, validated, in control and engaged with managing their health. Content-related preferences included education, self-help, social support and contact addresses. The majority of participants (>90%) experienced their involvement as worthwhile.

CONCLUSIONS

To the best of our knowledge, this is one of the first studies describing PPI in intervention development for PSS. The involvement was perceived as a valuable contribution to the development process.

PATIENT OR PUBLIC CONTRIBUTION

Adults with lived experiences were involved at the level of collaboration through the establishment of a participatory research team (PRT) and at the level of consultation through a workshop series, including one of the coauthors. They were involved in developing and validating intervention material and checking data interpretation.

Veteran Beliefs About the Causes of Gulf War Illness and Expectations for Improvement

BACKGROUND

Individuals' beliefs about the etiology of persistent physical symptoms (PPS) are linked to differences in coping style. However, it is unclear which attributions are related to greater expectations for improvement.

METHOD AND RESULTS

A cross-sectional regression analysis (N = 262) indicated that Veterans with Gulf War Illness (GWI) who attributed their GWI to behavior, (e.g., diet and exercise), had greater expectations for improvement (p = .001) than those who attributed their GWI to deployment, physical, or psychological causes (p values > .05).

CONCLUSIONS

Findings support the possible clinical utility of exploring perceived contributing factors of PPS, which may increase perceptions that improvement of PPS is possible.

TRIAL REGISTRATION

ClinicalTrials.gov Identifier: NCT02161133.

The Kvetch: Assessment, Pathogenesis, and Treatment of Patients Who Are Clinically Impaired by Chronic Complaining

ABSTRACT

Clinicians often encounter patients whose presentations are characterized by long lists of complaints about their biological, psychological, interpersonal, and social conditions. The problems on which the complaints are based are variably reality-based and variably modifiable. Some of these patients display chronic complaining as a core, distinguishing feature. Accordingly, the aims of this article are to consider excesses of chronic complaining as psychiatric phenomena, explore possible pathogenetic contributions, describe approaches for treating conditions marked by clinically pertinent chronic complaining, and suggest areas for future research. Based on clinical observations enhanced by selective narrative literature review, we delineate and differentiate four groups of patients: 1) situational complainers; 2) chronic complainers due to unidentified medical problems; 3) mood-induced chronic complainers; and 4) personality-driven pan-dimensional chronic complainers. The last-mentioned group consists of help-seeking versus help-rejecting subtypes, the latter including a subset we designate as malignant chronic complainers. Strategies for managing these patients begin with detailed assessment of all complaints, ascertaining reality-based contributions to the complaints, including those initiated by patients themselves. Management approaches use specific biopsychosocial techniques based on patient-centered particulars. Psychotherapeutic strategies center on compassionate, empathic witnessing. Specific tactics include attending to unresolved grief and trauma, behavioral activation, cognitive and narrative restructuring and reframing methods, mentalizing and imaginal approaches, and psychodynamic methods including attention to attachment issues and transference. Sources of countertransference reactions to these patients should be identified and can be addressed. The many questions raised by these patients' presentations merit further research.

Psychiatric disorder and its association with gastrointestinal cancer: a retrospective cohort study with 45,842 patients in Germany

PURPOSE

Psychiatric disorders and cancer are both common, and comorbidity has detrimental impacts on cancer outcomes. Previous studies focus on affective disorders which arise after cancer diagnosis, not on the impact of psychiatric disorders on cancer risk. We investigate the association between psychiatric disorders and subsequent gastrointestinal cancer in a large cohort in Germany.

METHODS

This case-control study used secondary data (electronic medical records) from the national IQVIA Disease Analyzer database. We evaluated the association between previous psychiatric diagnosis in 44,582 matched patients with and without gastrointestinal (GI) cancer. Regression analyses were stratified by psychiatric diagnosis and adjusted by chronic comorbidities and previous psychiatric treatments.

RESULTS

No association between any previous psychiatric disease and GI cancers was found (OR = 0.98 (0.95-1.02 95%CL, p = 0.39). Previous psychosomatic disorder and GI cancer showed a significant negative association (OR: 0.86, 0.81-0.90 95%CL, p < 0.0001). No association was found between previous diagnosis with depression or PTSD and GI cancer. These results remained consistent when including previous psychiatric treatments in the regression analyses.

CONCLUSION

Psychiatric disease was not associated with GI cancer risk. Further investigation into the pathways linking psychiatric disease and cancer needs to be conducted, taking into consideration psychiatric treatments administered, to enhance our understanding of the relationship between these two common and devastating diseases.

Doctors Speak: A Qualitative Study of Physicians' Prescribing of Antidepressants in Functional Bowel Disorders

Tricyclic antidepressants (TCAs) are frequently prescribed for chronic functional pain disorders. Although the mechanism of action targets pain perception, treating patients with TCAs for disorders conceptualized as "functional" can promote stigmatization in these patients because it hints at psychological dimensions of the disorder. The goal of this study was to understand how physicians prescribe TCAs in the face of this challenge. We interviewed eleven gastroenterologists in tertiary care clinics specializing in functional gastrointestinal disorders, such as irritable bowel syndrome. We found that the physicians interviewed (1) were aware of the stigma attached to taking antidepressants for a medical condition, (2) emphasized biological, as opposed to psychological, mechanisms of action, (3) while focusing on biological mechanisms, they nevertheless prescribed TCAs in a way that is highly attentive to the psychology of expectations, making specific efforts to adjust patients' expectations to be realistic and to reframe information that would be discouraging and (4) asked patients to persist in taking TCAs despite common and, at times, uncomfortable side effects. In this context of shared decision making, physicians described nuanced understanding and behaviours necessary for treating the complexity of functional disorders and emphasized the importance of a strong patient-provider relationship.

The Usefulness of the Short Form-8 for Chronic Pain in the Orofacial Region: A Prospective Cohort Study

Background and purpose Given that chronic pain has become a major problem in recent years, affecting approximately 30% of the general population, this study used the Japanese version of the Short Form-8 (SF-8) to investigate (1) the quality of life (QOL) of patients with burning mouth syndrome (BMS) or persistent idiopathic facial pain (PIFP) (compared with a Japanese control group) and (2) whether therapeutic intervention improves the QOL and reduces pain (comparison between 0 and 12 weeks) of patients with BMS or PIFP. Materials and methods A total of 63 patients diagnosed with either BMS (n=45) or PIFP (n=18) were included in this study. The diagnostic criteria for BMS and PIFP were established based on the third edition of the International Classification of Headache Disorders. Results Our study results showed that while Physical Component Summary (PCS) in patients with BMS or PIFP improved with treatment, it did not improve to the national standard value (NSV) after 12 weeks of intervention. In contrast, the Mental Component Summary (MCS) improved to the same level as the NSV after 12 weeks of intervention. Conclusions We found that therapeutic intervention improves MCS and reduces pain; however, improving PCS requires time.

Aetiological Understanding of Fibromyalgia, Irritable Bowel Syndrome, Chronic Fatigue Syndrome and Classificatory Analogues: A Systematic Umbrella Review

Background

This umbrella review systematically assesses the variety and relative dominance of current aetiological views within the scientific literature for the three most investigated symptom-defined functional somatic syndromes (FSS) and their classificatory analogues within psychiatry and psychology.

Method

An umbrella review of narrative and systematic reviews with and without meta-analyses based on a search of electronic databases (PubMed, Web of Science, Embase, PsychINFO) was conducted. Eligible reviews were published in English, focused on research of any kind of aetiological factors in adults diagnosed with fibromyalgia syndrome (FMS), irritable bowel syndrome (IBS), chronic fatigue syndrome/myalgic encephalomyelitis (CFS/ME), and somatic symptom disorder (SSD)/somatoform disorder (SFD).

Results

We included 452 reviews (132 systematic reviews including meta-analyses, 133 systematic reviews, 197 narrative reviews), of which 132 (29%) focused on two or more of the investigated health conditions simultaneously. Across diagnoses, biological factors were addressed in 90% (k = 405), psychological in 33% (k = 150), social in 12% (k = 54), and healthcare factors in 5% (k = 23) of the reviews. The methodological quality of the included systematic reviews (k = 255) was low (low/critically low: 41% [k = 104]; moderate: 49% [k = 126]; high quality: 10% [k = 25]). The high-quality systematic reviews suggest that deficient conditioned pain modulation, genetic factors, changes in the immune, endocrinological, gastrointestinal, cardiovascular, and nervous system, and psychosocial factors such as sexual abuse and pain catastrophizing increase the risk for FSS.

Conclusion

Only very few systematic reviews have used comprehensive, biopsychosocial disease models to guide the selection of aetiological factors in FSS research. Future research should strive for higher scientific standards and broaden its perspective on these health conditions.

Characteristics of collaborative care networks in functional disorders: A systematic review

OBJECTIVE

Functional disorders (FD) are complex conditions, for which multidisciplinary involvement is often recommended. Collaborative care networks (CCN) may unlock the potential of the multidisciplinary team (MDT) in FD care. To understand what characteristics should be part of CCNs in FD, we studied the composition and characteristics of existing CCNs in FD.

METHODS

We performed a systematic review following PRISMA guidelines. A search of PubMed, WebofScience, PsycInfo, SocINDEX, AMED and CINAHL was undertaken to select studies describing CCNs in FD. Two reviewers extracted characteristics of the different CCNs. Characteristics were classified as relating to structure and processes of networks.

RESULTS

A total of 62 studies were identified representing 39 CCNs across 11 countries. Regarding structural characteristics, we found that most networks are outpatient, secondary-care based, with teams of between two and 19 members. Medical specialists were most commonly involved and the typical team leads as well as main patient contacts were general practitioners (GPs) or nurses. Regarding processes, collaboration was demonstrated mostly during assessment, management and patient education, less often during rehabilitation and follow-up, mostly using MDT meetings. CCNs provided a wide range of treatment modalities, reflecting a biopsychosocial approach, including psychological therapies, physiotherapy and social and occupational therapy.

CONCLUSION

CCNs for FD are heterogeneous, showing a wide variety of structures as well as processes. The heterogeneity of results provides a broad framework, demonstrating considerable variation in how this framework is applied in different contexts. Better development of network evaluation, as well as professional collaboration and education processes is needed.

Public stigma toward fatigue-do social characteristics of affected persons matter? Results from the SOMA.SOC study

Objectives

Although public stigma imposes a great burden on those affected with manifold negative consequence there is not much known about public stigma related to fatigue. Therefore, this study addresses the following research questions: (1) What is the magnitude of public stigma toward individuals with fatigue? (2) Are there differences in public stigma depending on the social characteristics of the affected person (sex, occupation, and migration)?

Methods

Analyses are based on a national telephone survey in Germany (N = 1,209). A vignette describing a person with symptoms of fatigue was presented to the respondents. Vignettes were varied according to sex, occupational status, and migration status. Stigma toward the person presented in the vignette was measured by stereotypes and negative emotional reactions (anger).

Results

Of the stereotypes under study, "hypersensitive" was most frequently endorsed by the respondents (35.7%), followed by "weak will" (27.2%). About 15-20% of the respondents agreed that they react with anger, annoyance or incomprehension. There were considerable differences in fatigue stigma according to the social characteristics of the affected person. In two social groups public stigma was particularly pronounced: (1) male persons with a low occupational status and a migration background; (2) female persons with a high occupational status and without a migration status. In contrast, women with a low occupational status and a migration background were less stigmatized.

Conclusion

Individuals suffering from fatigue symptoms are confronted with stereotypes and negative emotional reactions by the public. Magnitude of public stigma considerably varies according to social characteristics of the afflicted person. Future studies should consider applying an intersectional approach to identify groups that are at risk of multiple stigma.

Patients' acceptance of explanatory models for persistent somatic symptoms: A qualitative analysis within the HERMES study

OBJECTIVE

The aim of this qualitative study was to provide an in-depth analysis of participants' experiences with video-animated explanatory models developed within the three-arm randomized controlled HERMES study ('Helpful explanatory models for somatic symptoms') and suggestions for further intervention improvement.

METHODS

Semi-structured qualitative interviews were conducted with psychosomatic outpatients with persistent somatic symptoms (PSS) after they were randomized to view one of three psychoeducational videos on a tablet computer: a) an explanatory model without personalization or b) an explanatory model with personalization in the two experimental groups or c) PSS guidelines without an explanatory model in the control group. Qualitative interviews were audiotaped, transcribed and analyzed applying thematic analysis.

RESULTS

Seventy-five patients with PSS were allocated to the study arms, mean duration of interviews was 8.19 min (SD = 3.19, range 4.02-19.49 min). Although all participants gave positive feedback regardless of their allocated study arm, those in the explanatory model without and with personalization groups were especially likely to rate the psychoeducational interventions as helpful. Results highlighted previous illness course, symptom perceptions and patient characteristics as key factors related to patients' response to the video interventions and optimal personalization of the explanatory model.

CONCLUSION

The present study not only demonstrated the acceptance of all three psychoeducational interventions developed within the HERMES study, but also provided valuable insights into potential key factors that may increase their impact and potential starting points for tailored psychoeducation in patients with PSS.

Mirror Therapy in Patients with Somatoform Pain Disorders-A Pilot Study

Patients with chronic pain report reduced quality of life and high symptom burden while often responding insufficiently to treatment options. Mirror therapy has been proven to be effective in treating phantom limb pain and other conditions such as CRPS. This study was designed to investigate the efficacy of mirror therapy in patients with somatoform pain disorders on symptom severity and associated physiological parameters. Fifteen patients with persistent somatoform pain disorder (F45.40) or chronic pain disorder with somatic and psychological factors (F45.41) participated and received four weeks of tablet-based mirror therapy. Symptom severity was measured with established questionnaires, and their thermal detection, pain thresholds, and heart rate variability (HRV) were also assessed. After mirror therapy, pain intensity was reduced (z = -2.878, p = 0.004), and pain thresholds for cold stimuli were also diminished, i.e., the subjects became more sensitive to cold stimuli (z = -2.040, p = 0.041). In addition, a reduction of absolute power in the low-frequency band of HRV (t(13) = 2.536, p = 0.025) was detected. These findings indicate that this intervention may reduce pain intensity and modulate associated physiological parameters. As these results are limited by several factors, e.g., a small sample size and no control group, they should be validated in further studies investigating this novel intervention in these patients.

Early identification of persistent somatic symptoms in primary care: data-driven and theory-driven predictive modelling based on electronic medical records of Dutch general practices

OBJECTIVE

The present study aimed to early identify patients with persistent somatic symptoms (PSS) in primary care by exploring routine care data-based approaches.

DESIGN/SETTING

A cohort study based on routine primary care data from 76 general practices in the Netherlands was executed for predictive modelling.

PARTICIPANTS

Inclusion of 94 440 adult patients was based on: at least 7-year general practice enrolment, having more than one symptom/disease registration and >10 consultations.

METHODS

Cases were selected based on the first PSS registration in 2017-2018. Candidate predictors were selected 2-5 years prior to PSS and categorised into data-driven approaches: symptoms/diseases, medications, referrals, sequential patterns and changing lab results; and theory-driven approaches: constructed factors based on literature and terminology in free text. Of these, 12 candidate predictor categories were formed and used to develop prediction models by cross-validated least absolute shrinkage and selection operator regression on 80% of the dataset. Derived models were internally validated on the remaining 20% of the dataset.

RESULTS

All models had comparable predictive values (area under the receiver operating characteristic curves=0.70 to 0.72). Predictors are related to genital complaints, specific symptoms (eg, digestive, fatigue and mood), healthcare utilisation, and number of complaints. Most fruitful predictor categories are literature-based and medications. Predictors often had overlapping constructs, such as digestive symptoms (symptom/disease codes) and drugs for anti-constipation (medication codes), indicating that registration is inconsistent between general practitioners (GPs).

CONCLUSIONS

The findings indicate low to moderate diagnostic accuracy for early identification of PSS based on routine primary care data. Nonetheless, simple clinical decision rules based on structured symptom/disease or medication codes could possibly be an efficient way to support GPs in identifying patients at risk of PSS. A full data-based prediction currently appears to be hampered by inconsistent and missing registrations. Future research on predictive modelling of PSS using routine care data should focus on data enrichment or free-text mining to overcome inconsistent registrations and improve predictive accuracy.

Somatic symptoms and related disorders in a large cohort of people with epilepsy: A cohort study

OBJECTIVE

This study was undertaken to characterize somatic symptoms and related disorders (SSD) in epilepsy.

METHODS

Adults with epilepsy under active follow-up at a tertiary epilepsy center were consecutively enrolled. The diagnosis of SSD was performed by an experienced psychologist based on the structured clinical interview for Statistical Manual of Mental Disorders, 5th edition. Detailed social/demographic data, epilepsy features, psychiatric features, life quality, disability, and economic burden were collected and compared between people with SSD and those without. Bodily distress syndrome checklist, Somatic Symptom Disorder-B Criteria Scale, Patient Health Questionnaire-9, and Generalized Anxiety Disorder seven-item scale (GAD-7) were used to evaluate SSD individuals' somatic symptoms, symptom-related psychological distress, and depressive and anxious symptoms. Quality of life and disability were assessed by Quality of Life in Epilepsy Inventory 31 (QOLIE-31) and World Health Organization Disability Assessment Schedule V.2.0 (WHO DAS 2.0). A risk prediction nomogram was generated using least absolute shrinkage and selection operator (LASSO) analysis and validated.

RESULTS

One hundred fifty of 631 participants (24%) were diagnosed with SSD. In people with SSD, the top three most common somatic symptoms were memory impairment, headache, and dizziness (85%, 80%, and 78%, respectively), and multiple systems were involved in most (82%) people with SSD. Compared with people without SSD, those with SSD had lower QOLIE-31 total scores, and higher WHO DAS 2.0 scores and disease economic burdens. LASSO analysis suggested that a history of severe traumatic brain injury, hippocampal sclerosis, low seizure worry and medication effects scores on QOLIE-31, multiple systems affected by somatic symptoms, and a high GAD-7 score were risk factors of SSD. The nomogram was validated for good accuracy in the training and testing cohorts.

SIGNIFICANCE

SSD are likely to be a common comorbidity in epilepsy and harm epilepsy prognosis. Our risk prediction nomogram was successfully developed but needs further validation in larger cohorts.

What psychological interventions are effective for the management of persistent physical symptoms (PPS)? A systematic review and meta-analysis

OBJECTIVES

Presentation of persistent physical symptoms is associated with increased health care utilization, yet clinical outcomes often remain suboptimal. This systematic review aimed to determine whether psychological interventions are effective for the management of PPS and if so, what are the features of the interventions and at what level of care are they delivered. The review also set out to establish which symptoms in those diagnosed with PPS can be effectively managed with psychological intervention.

METHODS

Studies were included if they clearly reported a psychological intervention, specified the study sample as adults with a diagnosis of persistent physical symptoms, included a comparator and as a minimum an outcome measure of somatic symptoms. Risk of bias was assessed using the EPHPP. Meta-analysis was conducted to estimate the overall effect of interventions on somatic symptoms (the primary outcome), anxiety and depression (secondary outcomes).

RESULTS

Seventeen papers of varying quality indicated that psychological interventions can be effective for the management of somatic symptoms reported by individuals with PPS within a primary care setting. Psychological interventions were also found to be effective at reducing depression symptoms in individuals with PPS in twelve of the included studies. However, the meta-analysis results suggest that the psychological interventions utilized within eleven of the included studies did not significantly impact anxiety symptoms.

CONCLUSIONS

Psychological interventions have some success in managing somatic symptoms in PPS patients within primary care settings although their effects on other psychological symptoms is more mixed. The review highlights the importance of establishing a clearer diagnostic classification to inform treatment trajectories and the need for appropriate training and support within a multi-disciplinary team to enable the provision of such therapies.

How symptoms of simple acute infections affect the SSS-8 and SSD-12 as screening instruments for somatic symptom disorder in the primary care setting

Objective

Somatic symptom disorder (SSD) is one of the most common reasons for consultations in primary care, in addition to simple acute infections. Questionnaire-based screening instruments to identify patients at high risk of SSD are thus of great clinical relevance. Although screening instruments are frequently used, it is currently unclear to what extent they are influenced by the concurrent presence of simple acute infections. Therefore, this study aimed to investigate how symptoms of simple acute infections affect the two established questionnaires as screening instruments for somatic symptom disorder in the primary care setting.

Methods

In our cross-sectional, multicenter design, a total of 1,000 patients in primary care practices were screened using the two most established SSD screening questionnaires, the 8-item Somatic Symptom Scale (SSS-8) and the 12-item Somatic Symptom Disorder-B Criteria Scale (SSD-12), followed by clinical assessment by the primary care physician.

Results

A total of 140 patients with a simple acute infection (acute infection group, AIG) and 219 patients with chronic somatic symptoms (somatic symptom group, SSG) were included. The patients in the SSG showed higher total SSS-8 and SSD-12 scores than the patients in the AIG; however, the SSS-8 was more susceptible to changes triggered by symptoms of a simple acute infection than the SSD-12.

Conclusion

These results suggest that the SSD-12 is less susceptible to symptoms of a simple acute infection. Its total score and corresponding cutoff value provide a more specific and thus less susceptible screening tool for identifying SSD in primary care.

A Review of the Impact of Sociodemographic Factors on the Assessment and Management of Pediatric Somatic Symptom and Related Disorders

BACKGROUND

While factors such as race, sex, gender identity, and socioeconomic status impact the diagnosis and treatment of a variety of conditions, there are few studies examining their influence on somatic symptom and related disorders (SSRDs), particularly in the pediatric population.

OBJECTIVE

In this review, we outline the existing literature on how sociodemographic characteristics influence the overall care of pediatric SSRDs. Throughout this literature review, we highlight opportunities for further research, including potential disparities in evaluation, management, and outcomes along several sociodemographic domains.

METHODS

We conducted a thorough review of the evidence for potential impact of race, sex, gender identity, and socioeconomic status on the presentation, diagnosis, management, and outcomes of pediatric somatization and SSRDs.

RESULTS

Recent studies evaluating the impact of race on SSRD care suggest the potential for provider bias in the evaluation and management of this population based on racial differences in diagnostic evaluations. Somatization may present differently based on a patient's race and potential cross-cultural status. Among studies of cisgender patients, there is evidence of provider bias in the assessment of somatic symptoms such that female patients are more likely to be diagnosed with an SSRD than male patients. However, there is little research among youth identifying as LGBTQ. The literature also indicates that low socioeconomic status and associated stressors are linked with the development of SSRDs, although it is unclear whether these factors are subject to bias by providers.

CONCLUSIONS

While the literature is sparse, there is evidence that sociodemographic factors contribute to differences in diagnosis, evaluation, and management of pediatric SSRDs. These factors, particularly race and sex, may also be subject to provider bias, although further studies are necessary. Provider bias can directly impact patients' perception of care, including feelings of dismissal, and may have downstream influences on symptom manifestation, patient-provider engagement, diagnostic evaluation, and management practices.

Somatization in Adolescents With Persistent Symptoms After Concussion: A Retrospective Chart Review

OBJECTIVE

After concussion, approximately 30% of adolescents experience symptoms that persist beyond 1 month postinjury. For some, these symptoms affect functioning, development, and quality of life. Somatization, where psychological distress contributes to physical symptoms, may contribute to persistent symptoms after concussion in some adolescents. Understanding how clinicians identify somatization in adolescents with persistent symptoms after concussion in practice is a critical next step in improving our understanding, identification, and subsequent treatment of somatization in this patient population. To address this, the investigators assessed and compared characteristics of adolescents with persistent symptoms after concussion with and without clinician-identified somatization.

METHODS

Participants were adolescents (N=94) referred for persistent symptoms after concussion to a specialty youth concussion clinic between January 2016 and May 2018. A retrospective chart review extracted demographic and injury characteristics, symptoms after concussion, school attendance, premorbid experiences, mental health, and medical service use. Participants with physician-identified somatization were compared with those without physician-identified somatization on these measures.

RESULTS

Adolescents with identified somatization had more severe and atypical neurological and psychiatric symptoms after concussion and more postinjury impairment in school attendance, were more likely to have a history of premorbid chronic pain or medically unexplained symptoms, and obtained more neuroimaging and health care after injury compared with those unaffected by somatization. They did not differ in mood or anxiety symptom self-reports.

CONCLUSIONS

This study identified characteristic differences and similarities in adolescents with and without clinician-identified somatization after a prolonged concussion recovery. These findings have the potential to improve clinical identification of somatization in youths following a concussion and may aid in treatment among this demographic group.

Interoceptive accuracy and bias in somatic symptom disorder, illness anxiety disorder, and functional syndromes: A systematic review and meta-analysis

Somatic symptom disorder, illness anxiety disorder, and functional syndromes are characterized by burdensome preoccupation with somatic symptoms. Etiological models propose either increased interoceptive accuracy through hypervigilance to the body, or decreased and biased interoception through top-down predictions about sensory events. This systematic review and meta-analysis summarizes findings of 68 studies examining interoceptive accuracy and 8 studies examining response biases in clinical or non-clinical groups. Analyses yielded a medium population effect size for decreased interoceptive accuracy in functional syndromes, but no observable effect in somatic symptom disorder and illness anxiety disorder. The overall effect size was highly heterogeneous. Regarding response bias, there was a small significant effect in somatic symptom disorder and illness anxiety disorder. Our findings strengthen the notion of top-down factors that result in biased rather than accurate perception of body signals in somatic symptom disorder and illness anxiety disorder.

Early Psychological Interventions for Somatic Symptom Disorder and Functional Somatic Syndromes: A Systematic Review and Meta-Analysis

OBJECTIVE

Psychological treatments for somatic symptom disorder and functional somatic syndromes (SSD/FSS) achieve moderate effects only, potentially because of the high chronicity in these patients. Therefore, we aimed to evaluate whether early treatment, that is, treatment in populations at risk or with recent onset, improves outcome.

METHODS

We conducted a systematic review and meta-analysis of (cluster-)randomized controlled trials evaluating early psychological interventions in the prevention and treatment of SSD/FSS in adults compared with inactive control conditions, standard care, or placebo. Individuals at risk for SSD/FSS, suffering from subthreshold symptoms or new onsets of SSD/FSS, or presenting with SSD/FSS for the first time were included.

RESULTS

We identified 30 eligible studies, mostly examining pain-related conditions. Interventions were diverse, ranging from bibliotherapy to cognitive-behavioral therapy. We found positive effects on depression post-treatment (Hedges' g = 0.12 [95% confidence interval = 0.03-0.2], k = 5) as well as on somatic symptom severity (g = 0.25 [0.096-0.41], k = 17) and health care utilization (g = 0.31 [0.18-0.44], k = 3) at follow-up. However, because of a high risk of bias, sensitivity to corrections for meta-bias, and missing outcome data, findings should be interpreted cautiously.

CONCLUSIONS

Our review shows that targeting SSD/FSS at an early stage represents a conceptual and practical challenge. Readily accessible interventions addressing transsymptomatic processes of SSD/FSS development and consolidation are highly needed. Future studies are needed to evaluate individuals with diverse symptoms, examine symptom history thoroughly, use placebo controls, and report outcomes completely to determine the efficacy of early psychological interventions for SSD/FSS.PROSPERO Registration:CRD42020140122.

Cost-effectiveness and cost-utility evaluation of individual vs. group transdiagnostic psychological treatment for emotional disorders in primary care (PsicAP-Costs): a multicentre randomized controlled trial protocol

BACKGROUND

Emotional disorders are common, and they have become more prevalent since the COVID-19 pandemic. Due to a high attendance burden at the specialized level, most emotional disorders in Spain are treated in primary care, where they are usually misdiagnosed and treated using psychotropic drugs. This contributes to perpetuate their illness and increase health care costs. Following the IAPT programme and the transdiagnostic approach, the PsicAP project developed a brief group transdiagnostic cognitive-behavioural therapy (tCBT) as a cost-effective alternative. However, it is not suitable for everyone; in some cases, one-on-one sessions may be more effective. The objective of the present study is to compare, in cost-benefit terms, group and individual tCBT with the treatment usually administered in Spanish primary care (TAU).

METHODS

A randomized, controlled, multicentre, and single-blinded trial will be performed. Adults with mild to moderate emotional disorders will be recruited and placed in one of three arms: group tCBT, individual tCBT, or TAU. Medical data and outcomes regarding emotional symptoms, disability, quality of life, and emotion regulation biases will be collected at baseline, immediately after treatment, and 6 and 12 months later. The data will be used to calculate incremental cost-effectiveness and cost-utility ratios.

DISCUSSION

This trial aims to contribute to clinical practice research. The involvement of psychologists in primary care and the implementation of a stepped-care model for mental disorders are recommended. Group therapy and a transdiagnostic approach may help optimize health system resources and unblock waiting lists so that people can spend less time experiencing mental health problems.

TRIAL REGISTRATION

ClinicalTrials.gov: NCT04847310; Protocols.io: bx2npqde. (April 19, 2021).

Prognosis in functional and recognised pathophysiological neurological disorders - a shared basis

OBJECTIVE

To compare self-reported outcomes, clinical trajectory and utility of baseline questionnaire responses in predicting prognosis in functional and recognised pathophysiological neurological disorders.

METHODS

Baseline data on 2581 patients included health-related quality of life, psychological and physical symptoms, illness perceptions, consultation satisfaction and demographics. The prospective cohort included neurology outpatients classified with a functional (reporting symptoms 'not at all' or 'somewhat explained' by 'organic disease'; n = 716) or recognised pathophysiological disorder ('largely' or 'completely explained'; n = 1865). Logistic regression and deep neural network models were used to predict self-reported global clinical improvement (CGI) at 12-months.

RESULTS

Patients with functional and recognised pathophysiological disorders reported near identical outcomes at 12-months with 67% and 66% respectively reporting unchanged or worse CGI. In multivariable modelling 'negative expectation of recovery' and 'disagreement with psychological attribution' predicted same or worse outcome in both groups. Receipt of disability-related state benefit predicted same or worse CGI outcome in the functional disorder group only (OR = 2.28 (95%-CI: 1.36-3.84) in a group-stratified model) and was not related to a measure of economic deprivation. Deep neural network models trained on all 92 baseline features predicted poor outcome with area under the receiver-operator curve of 0.67 in both groups.

CONCLUSIONS

Those with functional and recognised pathophysiological neurological disorder share similar outcomes, clinical trajectories, and poor prognostic markers in multivariable models. Prediction of outcome at a patient level was not possible using the baseline data in this study.

Barriers and facilitators to implementing interventions for medically unexplained symptoms in primary and secondary care: A systematic review

OBJECTIVE

To integrate existing literature on barriers and facilitators to implementing interventions for Medically Unexplained Symptoms (MUS) in primary and secondary care.

METHOD

Systematic review following PRISMA guidelines. A search of PsychINFO/Pubmed/Web of Science was performed to select studies focusing on MUS-interventions and implementation. All included papers were checked for quality and bias. A narrative synthesis approach was used to describe the included papers by implementation level, ranging from the specific intervention to the broader economic/political context.

RESULTS

20 (quantitative/qualitative/mixed design) papers were included, but the quantitative studies especially, lacked methodological quality, with possible publication bias as a result. Results showed that the intervention needs to be acceptable and in line with daily practice routines. The professional's attitude and skills are important for implementation success, as well as for overcoming problems in the professional-patient interaction. If patients stick to finding a somatic cause, this hampers implementation. A lack of time is a frequently mentioned barrier at the organizational level. Barriers/facilitators at the social context level and at the economic/political level were barely reported on in the included papers.

CONCLUSION

Results were integrated into an existing implementation model, as an example of how MUS-interventions can be successfully implemented in practice.

The association of childhood maltreatment, somatization and health-related quality of life in adult age: Results from a population-based cohort study

BACKGROUND

Population-based data regarding the relationship between childhood maltreatment (CM), somatization and health-related quality of life (HRQoL) in adults are limited.

OBJECTIVE

To investigate the association of CM history (emotional and physical abuse and neglect, sexual abuse) with somatization and with physical and mental HRQoL in adults.

PARTICIPANTS AND SETTING

Data from 2305 participants from the population-based Study of Health in Pomerania were analyzed (aged 20 to 80 years).

METHODS

We applied the Childhood Trauma Questionnaire. Somatoform disorders were diagnosed according to the criteria of the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV) in a clinical interview. Using a self-administered questionnaire, we assessed the number of somatic symptoms and physical and mental HRQoL.

RESULTS

Sexual abuse was related to the diagnosis of a somatoform disorder (odds ratio [OR] 1.87; 95% confidence interval [CI] 1.29, 2.69). Emotional abuse and physical neglect were associated with the number of somatic symptoms (B = 0.93; 95% CI 0.42, 1.45 and B = 0.50; 95% CI 0.17, 1.83, respectively). Sexual abuse and physical neglect were related to lower physical HRQoL (B = -1.87; 95% CI -3.17, -0.57 and B = -1.26; 95% CI -2.02, -0.49, respectively), and emotional abuse was associated with lower mental HRQoL (B = -2.83; 95% CI -4.03, -1.62).

CONCLUSIONS

A history of CM, in particular sexual abuse, emotional abuse and physical neglect, is a risk factor for somatization and impaired HRQoL in adults. Individuals with somatic symptoms are an important target group for CM screening. Addressing HRQoL might be significant in psychotherapy for individuals with CM experience.

Pediatric somatization in the emergency department: assessing missed opportunities for early management

OBJECTIVE

Somatization is a common phenomenon that can severely complicate youths' functioning and health. The burden of somatization on pediatric acute care settings is currently unclear; better understanding it may address challenges clinicians experience in effectively caring for somatizing patients. In this study, we estimate the prevalence of somatization in a pediatric emergency department (ED).

METHODS

We conducted a retrospective cross-sectional study of visits for non-critical, non-mental health-related concerns (n = 150) to a quaternary-level pediatric ED between July 2016 and August 2017. Demographic and clinical visit details were collected through chart review and used by two reviewing clinicians to classify whether each visit had a "probable," "unclear" (possible), or "unlikely" somatizing component.

RESULTS

Approximately 3.33% (n = 5) of youth displayed probable somatization, and an additional 13.33% (n = 20) possibly experienced a somatizing component but require additional psychosocial and visit documentation to be certain. Longer symptom duration and multiple negative diagnostic tests were associated with a higher likelihood of either probable or possible somatization.

CONCLUSIONS

A considerable proportion of non-mental health-related visits may involve a somatizing component, indicating the burden of mental health concerns on the ED may be underestimated. A higher index of suspicion for the possibility of somatization may support clinicians in managing somatizing patients.

Making sense of symptoms, clinicians and systems: a qualitative evaluation of a facilitated support group for patients with medically unexplained symptoms

Objectives

Health services to date have inadequately addressed the physical and mental health needs of patients with medically unexplained symptoms. This qualitative study evaluates a piloted facilitated support group (FSG) developed for patients with medically unexplained symptoms to inform recommendations and resources for this patient population.

Methods

Using a qualitative descriptive design, we conducted and thematically analyzed semi-structured interviews with participants (n = 8) and facilitators (n = 4) to explore their experiences of the facilitated support group. Common themes that captured strengths and challenges of the facilitated support group were identified.

Results

The following key themes were identified through analysis of the data: Participants described 1) feeling validated through sharing similar experiences with peers; 2) learning practical symptom management and coping strategies; and 3) gaining new perspectives for navigating conversations with PCPs.

Conclusions

Our findings show that a facilitated support group may provide additional forms of support and resources for patients with medically unexplained symptoms, filling a gap in currently available clinical care offered by health care professionals. Potential implications: This paper highlights lessons learned that can inform the design and delivery of future supports and resources directed toward optimizing patient care for this underserved patient population. Our findings are relevant to those who are involved in direct patient care or involved in designing and implementing self-management programs.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12875-021-01495-9.

Transdisciplinary Generalism: Naming the epistemology and philosophy of the generalist

BACKGROUND

Transdisciplinary research and generalist practice both face the task of integrating and discerning the value of knowledge across disciplinary and sectoral knowledge cultures. Transdisciplinarity and generalism also both offer philosophical and practical insights into the epistemology, ontology, axiology, and logic of seeing the 'whole'. Although generalism is a skill that can be used in many settings from industry to education, the focus of this paper is the literature of the primary care setting (i.e., general practice or family medicine). Generalist philosophy and practice in the family medicine setting highly values whole person care that uses integrative and interpretive wisdom to include both biomedical and biographical forms of knowledge. Generalist researchers are often caught between reductionist (positivist) biomedical measures and social science (post-positivist) constructivist theories of knowing. Neither of these approaches, even when juxtaposed in mixed-methods research, approximate the complexity of the generalist clinical encounter. A theoretically robust research methodology is needed that acknowledges the complexity of interpreting these ways of knowing in research and clinical practice.

METHODS

A conceptual review of literature to define the alignment between (a) the philosophy and practice of generalism in primary care and (b) both the practical (Zurich) and philosophical or methodological (Nicolescuian) schools of transdisciplinarity.

RESULTS

The alignment between generalism and transdisciplinarity included their broad scope, relational process, complex knowledge management, humble attitude to knowing, and real-world outcome focus.

CONCLUSION

The concurrence between these approaches to knowing is offered here as Transdisciplinary Generalism - a coherent epistemology for both primary care researchers and generalist clinicians to understand, enact, and research their own sophisticated craft of managing diverse forms of knowledge.

Patient-Centered Medicine: A Necessary Condition for the Management of Functional Somatic Syndromes and Bodily Distress

This paper argues that “functional,” “medically unexplained,” or “somatoform” symptoms and disorders necessarily require a patient-centered approach from the clinicians. In the first part, I address the multiple causes of the patients' suffering and I analyze the unease of the doctors faced with these disorders. I emphasize the iatrogenic role of medical investigations and the frequent failure in attempting to reassure the patients. I stress the difficulties in finding the right terms and concepts, despite overabundant nosological categories, to give a full account of psychosomatic complexity. Finally, I discuss the moral dimension attached to assigning a symptom, at times arbitrarily, to a psychogenic origin. The following part presents a brief reminder of the patient-centered approach (PCA) in medicine. In the last part, I aim to explain why and how patient-centered medicine should be applied in the context of functional disorders. First, because PCA focuses on the patients' experience of illness rather than the disease from the medical point of view, which is, indeed, absent. Second, because PCA is the only way to avoid sterile attribution conflicts. Last, because PCA allows doctors and patients to collaboratively create plausible and non-stigmatizing explanations for the symptoms, which paves the way toward effective management.

What is it like to live with medically unexplained physical symptoms? A qualitative meta-summary

Medically unexplained physical symptoms (MUPS) are a frequent phenomenon. Understanding adults and adolescents' lived experience with MUPS is essential for providing adequate care, yet a rigorous synthesis of existing studies is missing. Objective: This study aimed to summarize findings from primary qualitative studies focused on adults' and adolescents' experience of living with MUPS. Design: Qualitative studies were searched in the PsycINFO, PsycARTICLES, and Medline databases and manually. A total of 23 resources met the inclusion criteria and were subjected to a qualitative meta-summary. Results: Eight themes were found across the set of primary studies, namely, the need to feel understood, struggling with isolation, 'sense of self' in strain, facing uncertainty, searching for explanations, ambivalence about diagnosis, disappointed by healthcare, and active coping. Conclusion: The eight themes represent the core struggles adults' and adolescents' with MUPS face in their lives, psychologically and socially. Although these themes appear to be universal, the analysis also revealed considerable variability of experience in terms of expectations from healthcare professionals, attitude towards formal diagnoses, ability to cope with the illness, or potential to transform the illness experience into personal growth. Addressing this diversity of needs represents a significant challenge for the healthcare system.

The acceptability of primary care or community-based behavioural interventions for persistent physical symptoms: Qualitative systematic review

PURPOSE

Persistent physical symptoms (PPS) are often associated with profound physical disability and psychological distress. Interventions for PPS that promote behavioural change aim to reduce levels of symptoms and improve overall functioning in patients. The evidence for these interventions is mixed, with effective relationships between patients and health practitioners (HPs) reported as the key to the success of primary care interventions. The objectives of this systematic review were to synthesize the qualitative evidence and to evaluate the acceptability of behavioural interventions for PPS in primary care, from the perspective of both patients and HPs.

METHODS

A comprehensive literature search was conducted in seven major electronic bibliographic databases, to February 2019. The aim was to identify a broad range of literature including, qualitative research, mixed methods research, and qualitative data embedded in trial reports or process evaluations. Fifty-eight full papers were screened against the inclusion criteria. Nine studies were included and quality-assessed. A qualitative evidence synthesis was conducted using thematic synthesis.

RESULTS

Some patients and HPs reported positive gains from taking part in or delivering interventions, with appropriate support and explanation of their symptoms important for patients. Barriers appeared to be underpinned by the relationship between the patients and HPs, and by beliefs and attitudes held by both parties.

CONCLUSIONS

Patients should be provided with adequate information to make an informed decision about whether an intervention is appropriate for them, and interventions should not end suddenly or without adequate follow-up. HPs should receive training and supervision to address their lack of confidence, and improve their knowledge of PPS.

Barriers and facilitators to the implementation of interventions for medically unexplained symptoms in primary care: A modified Delphi study

OBJECTIVE

Medically Unexplained Symptoms (MUS) are physical symptoms that last for longer than several weeks and for which no (sufficient) somatic explanation can be found. Interventions for treating MUS in primary care are available, but their implementation in daily practice appears difficult. In the current study we aim to explore key barriers and facilitators to the implementation of MUS-interventions in primary care.

METHODS

A three-round modified Delphi study was performed, using the input of 58 experts that are (in)directly involved in the care for patients with MUS (e.g. general practitioners (GPs), GP mental health workers, policy advisors). In the first online questionnaire, we generated ideas about relevant barriers and facilitators on different implementation levels. These ideas were independently coded by two researchers, and reformulated into unique barriers and facilitators. In round two, participants selected the ten most relevant barriers and facilitators from round one, which were ranked on importance in round three.

RESULTS

We identified 42 unique barriers and 57 unique facilitators to the implementation of MUS-interventions. The three highest ranked barriers were all related to time, i.e. too little time for treating complex MUS-patients. The most important facilitator was a positive attitude towards MUS-patients. Results varied somewhat per profession.

CONCLUSION

Key barriers and facilitators to the implementation of MUS-interventions seem to exist on the level of the patient, intervention, professional, organization, and external context. All of these levels should be taken into account in order to increase implementation success of MUS-interventions in primary care.

Diagnostic and treatment barriers to persistent somatic symptoms in primary care - representative survey with physicians

Background

Many patients consult their primary care physician with persistent somatic symptoms such as pain or sickness. Quite often these consultations and further diagnostic measures yield no medical explanation for the symptoms – patients and physicians are left in uncertainty. In fact, diagnostic and treatment barriers in primary care hinder timely health-care provision for patients suffering from persistent somatic symptoms (PSS). The significance of individual barriers is still unknown. We compare and quantify these barriers from the perspective of primary care physicians and identify subpopulations of primary care physicians who experience particular barriers as most severe.

Methods

We mailed a questionnaire to primary care physicians (PCP) in Germany and asked them which barriers they consider most important. We invited a random sample of 12,004 primary care physicians in eight federal states in Germany. Physicians provided anonymous mailed or online responses. We also mailed a postcard to announce the survey and a mail reminder. Main measures were Likert rating scales of items relating to barriers in the diagnosis and treatment of PSS in primary care. Information on demography and medical practice were also collected.

Results

We analyzed 1719 data sets from 1829 respondents. PCPs showed strongest agreement with statements regarding (1.) their lack of knowledge about treatment guidelines, (2.) their perceptions that patients with PSS would expect symptom relief, (3.) their concern to overlook physical disease in these patients, and (4.) their usage of psychotropic drugs with these patients. More experienced PCPs were better able to cope with the possibility of overlooking physical disease than those less experienced.

Conclusions

The PCPs in our survey answered that the obligation to rule out severe physical disease and the demand to relieve patients from symptoms belong to the most severe barriers for adequate treatment and diagnosis. Moreover, many physicians admitted to not knowing the appropriate treatment guidelines for these patients. Based on our results, raising awareness of guidelines and improving knowledge about the management of persistent somatic symptoms appear to be promising approaches for overcoming the barriers to diagnosis and treatment of persistent somatic symptoms in primary care.

Trial registration

German Clinical Trials Register (Deutschen Register Klinischer Studien, DRKS)

https://www.drks.de/drks_web/setLocale_EN.do

The date the study was registered: October 2^nd 2017

The date the first participant was enrolled: February 9^th 2018

DRKS-ID: DRKS00012942

Supplementary Information

The online version contains supplementary material available at 10.1186/s12875-021-01397-w.

ICD-10-Coding of Medically Unexplained Physical Symptoms and Somatoform Disorders-A Survey With German GPs

Background: General practitioners (GPs) are reluctant to use codes that correspond to somatization syndromes. Aim: To quantify GPs' views on coding of medically unexplained physical symptoms (MUPS), somatoform disorders, and associated factors. Design and Setting: Survey with German GPs. Methods: We developed six survey items [response options "does not apply at all (1)"-"does fully apply (6)"], invited a random sample of 12.004 GPs to participate in the self-administered cross-sectional survey and analysed data using descriptive statistics and logistic regression analyses. Results: Response rate was 15.2% with N = 1,731 valid responses (54.3% female). Participants considered themselves familiar with ICD-10 criteria for somatoform disorders (M = 4.52; SD =.036) and considered adequate coding as essential prerequisite for treatment (M = 5.02; SD = 1.21). All other item means were close to the scale mean: preference for symptom or functional codes (M = 3.40; SD = 1.21), consideration of the possibility of stigmatisation (M = 3.30; SD = 1.35) and other disadvantages (M = 3.28; SD = 1.30) and coding only if psychotherapy is intended (M = 3.39; SD = 1.46). Exposure, guideline knowledge, and experience were most strongly associated with GPs' self-reported coding behaviour. Conclusions: Subjective exposure, guideline knowledge, and experience as a GP, but no sociodemographic variable being associated with GPs' subjective coding behaviour could indicate that GPs offer a relatively homogeneous approach to coding and handling of MUPS and somatoform disorders. Strengthening guideline knowledge and implementation, and practise with simulated patients could increase the subjective competence to cope with the challenge that patients with MUPS and somatoform disorders present.

Helpful explanatory models for somatoform symptoms (HERMES): study protocol of a randomised mixed-methods pilot trial

INTRODUCTION

Persistent somatic symptoms (PSS) are common both in the general population and primary care. They are bothersome in terms of psychological and somatic symptom burden. Health professionals often struggle with communication, as there is a lack of scientifically supported explanatory models for PSS or a focus merely on somatic aspects of the complaints, which both frustrate patients' needs. The objective of the present study is therefore to develop a psychoeducational intervention based on a current evidence-based explanatory model, to examine its feasibility and form the basis for a large-scale randomised controlled trial.

METHODS AND ANALYSIS

In a randomised controlled mixed-methods pilot trial, 75 adult psychosomatic outpatients with PSS (duration of symptoms ≥6 months) and accompanying psychological (Somatic Symptom B-Criteria Scale total score ≥18) and somatic symptom burden (Patient Health Questionnaire-15 score >10) and no prior psychosomatic treatment will be eligible. Participants will be presented with either the explanatory model without (intervention group 1, n=25) or with elements of personalisation (intervention group 2, n=25). Participants in the control group (n=25) will receive information on current PSS guidelines. Participants will be blinded to group assignment and interventions will be shown on tablet computers at the outpatient clinic. After 1 month, qualitative follow-up telephone interviews will be conducted. As primary outcomes, mean changes in psychological and somatic symptom burden will quantitatively be compared between groups, respectively. Behavioural change mechanisms and feasibility of the three interventions will be evaluated using quantitative and qualitative measures.

ETHICS AND DISSEMINATION

Ethics approval has been granted by the medical ethics board of the Hamburg Medical Chamber (PV5653). Results from this study will be published in peer-reviewed journals and presented at national and international conferences.

TRIAL REGISTRATION NUMBER

DRKS00018803.

Development and User Experiences of a Biopsychosocial Interprofessional Online Course on Persistent Somatic Symptoms

Background: Communication between healthcare providers and patients with persistent somatic symptoms (PSS) is frequently hampered by mutual misunderstanding and dissatisfaction. Methods: We developed an online, interprofessional course to teach healthcare providers the knowledge, skills, and attitude they need to diagnose and treat PSS in a patient-centered manner based on the biopsychosocial model. The course consisted of six modules of 45-60 min. Each module contained different types of assignments, based on six cases: videos, discussion boards, reading assignments, polls, and quizzes. For this study, we included (1) medical residents, following the course as part of their residency training, and (2) healthcare providers (general practitioners, medical specialists, physiotherapists, nurses, and psychologists), following the course as continuing vocational training. Throughout the course, participants were asked to fill out online surveys, enquiring about their learning gains and satisfaction with the course. Results: The biopsychosocial approach was integrated across the modules and teached health care workers about recent insights on biological, psychological and social aspects of PSS. In total, 801 participants with a wide variety in clinical experience started the course; the largest groups of professionals were general practitioners (N = 400), physiotherapists (N = 124) and mental healthcare workers (N = 53). At the start of the course, 22% of the participants rated their level of knowledge on PSS as adequate. At the end of the course, 359 participants completed the evaluation questionnaires. Of this group, 81% rated their level of knowledge on PSS as adequate and 86% felt that following the course increased their competencies in communicating with patients with PSS (N = 359). On a scale from 1 to 10, participants gave the course a mean grade of 7.8 points. Accordingly, 85% stated that they would recommend the course to a colleague. Conclusion: Our course developed in a co-design process involving multiple stakeholders can be implemented, is being used, and is positively evaluated by professionals across a variety of health care settings.

Reduced Heart Rate Variability in Patients With Medically Unexplained Physical Symptoms: A Meta-Analysis of HF-HRV and RMSSD

OBJECTIVE

Medically unexplained physical symptoms (MUPS) and related syndromes are common and place a substantial burden on both patients and society. Chronic psychological distress and dysregulation of the autonomic nervous system may be common factors associated with MUPS, although previous studies have reported mixed results. The aims of this meta-analysis are to provide an updated synthesis of studies investigating heart rate variability (HRV) indices associated with autonomic nervous system functioning in three common MUPS syndromes and to explain inconsistencies in previous study findings.

METHODS

Literature search yielded 58 studies comparing HRV indices of reduced parasympathetic activity of healthy individuals with those of patients with chronic fatigue syndrome (npatients = 271), irritable bowel syndrome (npatients = 1005), and fibromyalgia (npatients = 534). Separate random-effects meta-analyses were conducted on studies measuring root mean square of successive differences (RMSSD) and high-frequency HRV (HF-HRV).

RESULTS

Regardless of syndrome type, patients had significantly lower RMSSD (k = 22, Hedges g = -0.37 [-0.53 to -0.21], p < .001) and HF-HRV (k = 52, Hedges g = -0.69 [-1.03 to -0.36], p < .001) than did healthy individuals. Sample age and publication year explained a substantial variation in RMSSD, whereas controlling for confounders in statistical analyses explained variation in HF-HRV.

CONCLUSIONS

Lower RMSSD and HF-HRV in patients with MUPS versus healthy controls indicates that autonomic nervous system dysregulation, particularly lower parasympathetic activity, may play a role in patients with these conditions. This conclusion may have important implications for the underlying mechanisms and treatment of MUPS and related syndromes.

Psychotherapists' perspective on the treatment of patients with somatic symptom disorders

OBJECTIVE

Guidelines recommend psychotherapy in addition to primary care for patients with moderate to severe somatic symptom disorders. While general practitioners' experiences have been well studied, psychotherapists' experiences with this patient group and the explanatory models psychotherapists use in psychotherapy are unknown.

METHODS

Semi-structured qualitative interviews were conducted between April and July 2018 with 20 German licensed outpatient psychotherapists with either a medical or a psychological background, using the label "somatoform disorders". Interviews were analyzed applying thematic analysis.

RESULTS

Psychotherapists experienced management of affected patients as challenging and partly frustrating, mainly due to the difficult diagnostic process and the "somatic fixation" of some patients. Diagnostic labelling was considered a delicate issue, with some psychotherapists using the term "somatoform", while others preferred either "functional" or vague descriptions like "psychosomatic". The explanatory process was deemed essential for treatment, as was the adaptation of explanations to both a patient's biography and language. As main explanatory factors, psychotherapists referred to generic vulnerability factors, previous somatic illness and health care system influences.

CONCLUSIONS

Explanatory models used in psychotherapy are patient-centred, processual and constitute a major component of the psychotherapeutic process. However, this process might be impeded if patients are confronted with different diagnostic labels and explanatory models during their pathways through care.

Behavioural modification interventions for medically unexplained symptoms in primary care: systematic reviews and economic evaluation

BACKGROUND

The term 'medically unexplained symptoms' is used to cover a wide range of persistent bodily complaints for which adequate examination and appropriate investigations do not reveal sufficiently explanatory structural or other specified pathologies. A wide range of interventions may be delivered to patients presenting with medically unexplained symptoms in primary care. Many of these therapies aim to change the behaviours of the individual who may have worsening symptoms.

OBJECTIVES

An evidence synthesis to determine the clinical effectiveness and cost-effectiveness of behavioural modification interventions for medically unexplained symptoms delivered in primary care settings was undertaken. Barriers to and facilitators of the effectiveness and acceptability of these interventions from the perspective of patients and service providers were evaluated through qualitative review and realist synthesis.

DATA SOURCES

Full search strategies were developed to identify relevant literature. Eleven electronic sources were searched. Eligibility criteria - for the review of clinical effectiveness, randomised controlled trials were sought. For the qualitative review, UK studies of any design were included. For the cost-effectiveness review, papers were restricted to UK studies reporting outcomes as quality-adjusted life-year gains. Clinical searches were conducted in November 2015 and December 2015, qualitative searches were conducted in July 2016 and economic searches were conducted in August 2016. The databases searched included MEDLINE, Cumulative Index to Nursing and Allied Health Literature (CINAHL), PsycINFO and EMBASE. Updated searches were conducted in February 2019 and March 2019.

PARTICIPANTS

Adult participants meeting the criteria for medically unexplained symptoms, including somatoform disorders, chronic unexplained pain and functional somatic syndromes.

INTERVENTIONS

Behavioural interventions were categorised into types. These included psychotherapies, exercise-based interventions, multimodal therapies (consisting of more than one intervention type), relaxation/stretching/social support/emotional support, guided self-help and general practitioner interventions, such as reattribution. Evidence synthesis: a network meta-analysis was conducted to allow a simultaneous comparison of all evaluated interventions in a single coherent analysis. Separate network meta-analyses were performed at three time points: end of treatment, short-term follow-up (< 6 months since the end of treatment) and long-term follow-up (≥ 6 months after the end of treatment). Outcomes included physical and psychological symptoms, physical functioning and impact of the illness on daily activities. Economic evaluation: within-trial estimates of cost-effectiveness were generated for the subset of studies where utility values (or quality-adjusted life-years) were reported or where these could be estimated by mapping from Short Form questionnaire-36 items or Short Form questionnaire-12 items outcomes.

RESULTS

Fifty-nine studies involving 9077 patients were included in the clinical effectiveness review. There was a large degree of heterogeneity both between and within intervention types, and the networks were sparse across all outcomes. At the end of treatment, behavioural interventions showed some beneficial effects when compared with usual care, in particular for improvement of specific physical symptoms [(1) pain: high-intensity cognitive-behavioural therapy (CBTHI) standardised mean difference (SMD) 0.54 [95% credible interval (CrI) 0.28 to 0.84], multimodal SMD 0.52 (95% CrI 0.19 to 0.89); and (2) fatigue: low-intensity cognitive-behavioural therapy (CBTLI) SMD 0.72 (95% CrI 0.27 to 1.21), relaxation/stretching/social support/emotional support SMD 0.87 (95% CrI 0.20 to 1.55), graded activity SMD 0.51 (95% CrI 0.14 to 0.93), multimodal SMD 0.52 (95% CrI 0.14 to 0.92)] and psychological outcomes [(1) anxiety CBTHI SMD 0.52 (95% CrI 0.06 to 0.96); (2) depression CBTHI SMD 0.80 (95% CrI 0.26 to 1.38); and (3) emotional distress other psychotherapy SMD 0.58 (95% CrI 0.05 to 1.13), relaxation/stretching/social support/emotional support SMD 0.66 (95% CrI 0.18 to 1.28) and sport/exercise SMD 0.49 (95% CrI 0.03 to 1.01)]. At short-term follow-up, behavioural interventions showed some beneficial effects for specific physical symptoms [(1) pain: CBTHI SMD 0.73 (95% CrI 0.10 to 1.39); (2) fatigue: CBTLI SMD 0.62 (95% CrI 0.11 to 1.14), relaxation/stretching/social support/emotional support SMD 0.51 (95% CrI 0.06 to 1.00)] and psychological outcomes [(1) anxiety: CBTHI SMD 0.74 (95% CrI 0.14 to 1.34); (2) depression: CBTHI SMD 0.93 (95% CrI 0.37 to 1.52); and (3) emotional distress: relaxation/stretching/social support/emotional support SMD 0.82 (95% CrI 0.02 to 1.65), multimodal SMD 0.43 (95% CrI 0.04 to 0.91)]. For physical functioning, only multimodal therapy showed beneficial effects: end-of-treatment SMD 0.33 (95% CrI 0.09 to 0.59); and short-term follow-up SMD 0.78 (95% CrI 0.23 to 1.40). For impact on daily activities, CBTHI was the only behavioural intervention to show beneficial effects [end-of-treatment SMD 1.30 (95% CrI 0.59 to 2.00); and short-term follow-up SMD 2.25 (95% CrI 1.34 to 3.16)]. Few effects remained at long-term follow-up. General practitioner interventions showed no significant beneficial effects for any outcome. No intervention group showed conclusive beneficial effects for measures of symptom load (somatisation). A large degree of heterogeneity was found across individual studies in the assessment of cost-effectiveness. Several studies suggested that the interventions produce fewer quality-adjusted life-years than usual care. For those interventions that generated quality-adjusted life-year gains, the mid-point incremental cost-effectiveness ratios (ICERs) ranged from £1397 to £129,267, but, where the mid-point ICER fell below £30,000, the exploratory assessment of uncertainty suggested that it may be above £30,000.

LIMITATIONS

Sparse networks meant that it was not possible to conduct a metaregression to explain between-study differences in effects. Results were not consistent within intervention type, and there were considerable differences in characteristics between studies of the same type. There were moderate to high levels of statistical heterogeneity. Separate analyses were conducted for three time points and, therefore, analyses are not repeated-measures analyses and do not account for correlations between time points.

CONCLUSIONS

Behavioural interventions showed some beneficial effects for specific medically unexplained symptoms, but no one behavioural intervention was effective across all medically unexplained symptoms. There was little evidence that these interventions are effective for measures of symptom load (somatisation). General practitioner-led interventions were not shown to be effective. Considerable heterogeneity in interventions, populations and sparse networks mean that results should be interpreted with caution. The relationship between patient and service provider is perceived to play a key role in facilitating a successful intervention. Future research should focus on testing the therapeutic effects of the general practitioner-patient relationship within trials of behavioural interventions, and explaining the observed between-study differences in effects within the same intervention type (e.g. with more detailed reporting of defined mechanisms of the interventions under study).

STUDY REGISTRATION

This study is registered as PROSPERO CRD42015025520.

FUNDING

This project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 24, No. 46. See the NIHR Journals Library website for further project information.

Comorbidities of Patients with Functional Somatic Syndromes Before, During and After First Diagnosis: A Population-based Study using Bavarian Routine Data

Functional somatic syndromes (FSS) are characterised by the presence of one or multiple chronic symptoms that cannot be attributed to a known somatic disease. They are thought to arise though a complex interaction of biological and psychosocial factors, but it is unclear whether they share a common aetiology. One hypothesis supported by recent studies is that the FSS are postinfectious disorders, as is widely recognised for a subset of patients with irritable bowel syndrome. Our study used claims data submitted by office-based physicians to compare groups of patients with different FSS in the five years before and after the point of first diagnosis. Even five years prior to diagnosis, FSS patients consulted more frequently for a range of psychological and somatic conditions than did controls. Following diagnosis, consultation rates increased further and remained persistently high. Five years after diagnosis, between 34% (somatization disorder) and 66% (fibromyalgia) of patients were still being treated for the condition. Both prior gastrointestinal and upper-respiratory infection were associated with an increased risk of developing an FSS. We therefore recommend that patients at risk should be identified at an early stage and the underlying psychosocial and somatic issues addressed to prevent progression of the condition.

Stepped, Collaborative, Coordinated Care for Somatic Symptom and Related Disorders (Sofu-Net)

Abstract. To improve early detection and adequate treatment for patients with somatic symptom and related disorders (SSRD), we implemented Sofu-Net, a stepped, collaborative, and coordinated health care network. This mixed-methods study aimed to evaluate Sofu-Net from the health care professionals’ perspective. Network partners (primary care physicians (PCPs), psychotherapists, inpatient mental health clinics) completed an evaluation survey. Following, qualitative analysis of focus groups explored facilitating factors and barriers of Sofu-Net. Of 66 network partners who completed the survey (response 83.5%), the majority was satisfied with Sofu-Net, and perceived improvements regarding management, early detection, and referral to mental health care. Both survey and focus groups identified interdisciplinary collaboration and diagnostic screening as most relevant facilitating factors. Important barriers to implementation included challenges in patient referral and structural factors. Necessary prerequisites for future stepped collaborative care for SSRD include structures facilitating diagnosis, inter-professional collaboration and referral, availability of mental health care, inclusion of comorbidities, and adequate reimbursement.

Patient perspectives on the diagnostic journey to a monogenic diabetes diagnosis: Barriers and facilitators

Most monogenic diabetes is misdiagnosed as either type 1 or type 2 diabetes (T1D/T2D). Few studies have examined the diagnostic challenges from the patients' perspective. This qualitative study aimed to investigate patients' journeys to obtaining a diagnosis of maturity-onset diabetes of the young (MODY) by elucidating the range of factors that can act as barriers and facilitators throughout this process. We recruited participants from the Personalized Diabetes Medicine Program (PDMP) at University of Maryland and used respondent-driven sampling to recruit additional patients. We conducted qualitative phone interviews between October 2016 and June 2017 with nine patients with diagnoses of monogenic diabetes (one HNF4A-MODY, seven GCK-MODY, and one HNF1A-MODY) and one parent of a patient with INS-MODY. Interview data were audio recorded, transcribed, and analyzed both inductively and deductively using thematic content analysis. All patients were female, with a mean age of 35 (range: 7-67 years). The amount of time these patients were misdiagnosed ranged from a few months to 41 years. We identified barriers and facilitators in three broad themes: (a) patient-related (nature of MODY symptoms, perceived test utility, individual personality); (b) provider-related (provider awareness and knowledge, provider communication); and (c) healthcare system-related (cost of testing, access to knowledgeable providers, patient education, and support resources). The diverse range of barriers and facilitators reiterates the complexity of the MODY diagnostic process. Limited awareness and knowledge of MODY from healthcare professionals and patients themselves account for most diagnostic delays described in this study. Efforts to promote awareness of MODY and expand access to screening and testing may result in quicker diagnosis and ensure the downstream benefits of proper treatment.

Detecting DSM-5 somatic symptom disorder: criterion validity of the Patient Health Questionnaire-15 (PHQ-15) and the Somatic Symptom Scale-8 (SSS-8) in combination with the Somatic Symptom Disorder - B Criteria Scale (SSD-12)

BACKGROUND

The fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) introduced somatic symptom and related disorders (SSD) to improve the diagnosis of somatoform disorders. It is unclear whether existing questionnaires are useful to identify patients with SSD. Our study investigates the diagnostic accuracy of the Patient Health Questionnaire-15 (PHQ-15) and the Somatic Symptom Scale-8 (SSS-8) in combination with the Somatic Symptom Disorder - B Criteria Scale (SSD-12).

METHODS

For this cross-sectional study, participants were recruited from a psychosomatic outpatient clinic. PHQ-15, SSS-8, and SSD-12 were administered and compared with SSD criteria from a diagnostic interview. Sensitivity and specificity were calculated for optimal individual and combined cutpoints. Receiver operator curves were created and area under the curve (AUC) analyses assessed.

RESULTS

Data of n = 372 patients [31.2% male, mean age: 39.3 years (s.d. = 13.6)] were analyzed. A total of 56.2% fulfilled the SSD criteria. Diagnostic accuracy was moderate for each questionnaire (PHQ-15: AUC = 0.70; 95% CI = 0.65-0.76; SSS-8: AUC = 0.71; 95% CI = 0.66-0.77; SSD-12: AUC = 0.74; 95% CI = 0.69-0.80). Combining questionnaires improved diagnostic accuracy (PHQ-15 + SSD-12: AUC = 0.77; 95% CI = 0.72-0.82; SSS-8 + SSD-12: AUC = 0.79; 95% CI = 0.74-0.84). Optimal combined cutpoints were ⩾9 for the PHQ-15 or SSS-8, and ⩾23 for the SSD-12 (sensitivity and specificity = 69% and 70%).

CONCLUSIONS

The combination of the PHQ-15 or SSS-8 with the SSD-12 provides an easy-to-use and time- and cost-efficient opportunity to identify persons at risk for SSD. If systematically applied in routine care, effective screening and subsequent treatment might help to improve quality of life and reduce health care excess costs.