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Guthrie AJ, Paredes-Echeverri S, Bleier C, Adams C, Millstein DJ, Ranford J, Perez DL. Mechanistic studies in pathological health anxiety: A systematic review and emerging conceptual framework. J Affect Disord 2024; 358:222-249. [PMID: 38718945 PMCID: PMC11298870 DOI: 10.1016/j.jad.2024.05.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 04/02/2024] [Accepted: 05/02/2024] [Indexed: 05/12/2024]
Abstract
BACKGROUND Pathological health anxiety (PHA) (e.g., hypochondriasis and illness anxiety disorder) is common in medical settings and associated with increased healthcare costs. However, the psychological and neurobiological mechanisms contributing to the development and maintenance of PHA are incompletely understood. METHODS We performed a systematic review to characterize the mechanistic understanding of PHA. PubMed, PsycINFO, and Embase databases were searched to find articles published between 1/1/1990 and 12/31/2022 employing a behavioral task and/or physiological measures in individuals with hypochondriasis, illness anxiety disorder, and PHA more broadly. RESULTS Out of 9141 records identified, fifty-seven met inclusion criteria. Article quality varied substantially across studies, and was overall inadequate. Cognitive, behavioral, and affective findings implicated in PHA included health-related attentional and memory recall biases, a narrow health concept, threat confirming thought patterns, use of safety-seeking behaviors, and biased explicit and implicit affective processing of health-related information among other observations. There is initial evidence supporting a potential overestimation of interoceptive stimuli in those with PHA. Neuroendocrine, electrophysiology, and brain imaging research in PHA are particularly in their early stages. LIMITATIONS Included articles evaluated PHA categorically, suggesting that sub-threshold and dimensional health anxiety considerations are not contextualized. CONCLUSIONS Within an integrated cognitive-behavioral-affective and predictive processing formulation, we theorize that sub-optimal illness and health concepts, altered interoceptive modeling, biased illness-based predictions and attention, and aberrant prediction error learning are mechanisms relevant to PHA requiring more research. Comprehensively investigating the pathophysiology of PHA offers the potential to identify adjunctive diagnostic biomarkers and catalyze new biologically-informed treatments.
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Affiliation(s)
- Andrew J Guthrie
- Functional Neurological Disorder Unit, Division of Behavioral Neurology and Integrated Brain Medicine, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Sara Paredes-Echeverri
- Functional Neurological Disorder Unit, Division of Behavioral Neurology and Integrated Brain Medicine, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Cristina Bleier
- Functional Neurological Disorder Unit, Division of Behavioral Neurology and Integrated Brain Medicine, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Caitlin Adams
- Functional Neurological Disorder Unit, Division of Behavioral Neurology and Integrated Brain Medicine, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Daniel J Millstein
- Functional Neurological Disorder Unit, Division of Behavioral Neurology and Integrated Brain Medicine, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Jessica Ranford
- Functional Neurological Disorder Unit, Division of Behavioral Neurology and Integrated Brain Medicine, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Department of Occupational Therapy, Massachusetts General Hospital, Boston, MA, USA
| | - David L Perez
- Functional Neurological Disorder Unit, Division of Behavioral Neurology and Integrated Brain Medicine, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Division of Neuropsychiatry, Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
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Shi C, Taylor S, Witthöft M, Du X, Zhang T, Lu S, Ren Z. Attentional bias toward health-threat in health anxiety: a systematic review and three-level meta-analysis. Psychol Med 2022; 52:604-613. [PMID: 35341486 DOI: 10.1017/s0033291721005432] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Attentional bias toward health-threat may theoretically contribute to the development and maintenance of health anxiety, but the empirical findings have been controversial. This study aimed to synthesize and explore the heterogeneity in a health-threat related attentional bias of health-anxious individuals, and to determine the theoretical model that better represents the pattern of attentional bias in health anxiety. Four databases (Web of Science, PubMed, PsycINFO, and Scopus) were searched for relevant studies, with 17 articles (N = 1546) included for a qualitative review and 16 articles (18 studies) for a three-level meta-analysis (N = 1490). The meta-analytic results indicated that the health anxiety group, compared to the control group, showed significantly greater attentional bias toward health-threat (g = 0.256). Further analyses revealed that attentional bias type, paradigm, and stimuli type were significant moderators. Additionally, compared to the controls, health-anxious individuals displayed significantly greater attention maintenance (g = 0.327) but nonsignificant attention vigilance to health-threat (g = -0.116). Our results provide evidence for the attention maintenance model in health-anxious individuals. The implications for further research and treatment of elevated health anxiety in the context of coronavirus disease-2019 (COVID-19) were also discussed.
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Affiliation(s)
- Congrong Shi
- Key Laboratory of Adolescent Cyberpsychology and Behaviour (Ministry of Education), Key Laboratory of Human Development and Mental Health of Hubei Province, School of Psychology, Central China Normal University, Wuhan, China
| | - Steven Taylor
- Department of Psychiatry, University of British Columbia, Vancouver, BC, Canada
| | - Michael Witthöft
- Department of Clinical Psychology, Psychotherapy, and Experimental Psychopathology, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Xiayu Du
- Key Laboratory of Adolescent Cyberpsychology and Behaviour (Ministry of Education), Key Laboratory of Human Development and Mental Health of Hubei Province, School of Psychology, Central China Normal University, Wuhan, China
| | - Tao Zhang
- Key Laboratory of Adolescent Cyberpsychology and Behaviour (Ministry of Education), Key Laboratory of Human Development and Mental Health of Hubei Province, School of Psychology, Central China Normal University, Wuhan, China
| | - Shan Lu
- Key Laboratory of Adolescent Cyberpsychology and Behaviour (Ministry of Education), Key Laboratory of Human Development and Mental Health of Hubei Province, School of Psychology, Central China Normal University, Wuhan, China
| | - Zhihong Ren
- Key Laboratory of Adolescent Cyberpsychology and Behaviour (Ministry of Education), Key Laboratory of Human Development and Mental Health of Hubei Province, School of Psychology, Central China Normal University, Wuhan, China
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Leonidou C, Panayiotou G. Attentional processing of information related to illness: Biases and associations with emotional response in young adults with different levels of illness anxiety. J Health Psychol 2020; 27:726-742. [PMID: 33106033 DOI: 10.1177/1359105320967435] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
This study investigated attentional processing of illness-related information and associations with emotional reactivity. 100 young adults with low to high illness anxiety levels underwent free and cued viewing tasks, while eye-tracking and emotional reactivity were recorded. During free viewing, participants showed early orienting bias and sustained vigilance bias toward illness vs neutral pictures. Increased illness anxiety predicted vigilance bias to illness vs fearful pictures. During cued viewing, participants showed avoidance bias for illness vs neutral pictures, predicted by greater cardiac acceleration. Task nature appears to influence attentional processing patterns of illness stimuli. Preliminary evidence supports that attention allocation may be an emotion regulation mechanism.
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Stefan S, Zorila A, Brie E. General threat and health-related attention biases in illness anxiety disorder. A brief research report. Cogn Emot 2019; 34:604-613. [PMID: 31354048 DOI: 10.1080/02699931.2019.1645643] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Illness anxiety disorder, formerly known as hypochondria, has been conceptualised in the psychological literature as an anxiety disorder, and its dimensional correlate is usually referred to as health anxiety. Similarly to other anxiety disorders, health anxiety has also been investigated in the context of attention biases as maintaining factors. However, so far, there is little consensus in the literature concerning the types of biases most relevant to health anxiety (i.e. facilitation, difficulty in disengaging, or avoidance), and whether biases occur towards generally threatening or specific stimuli. The current study aimed to investigate the presence of all three types of biases in relation to both general-threat and health-related threat pictures in clinical participants with illness anxiety disorder as compared to participants with low levels of health anxiety. The results showed a larger difficulty in disengagement bias for health-related threatening stimuli than for general-threatening stimuli in all participants regardless of group factor. No other significant effects were identified. Thus, attention biases follow a simiar pattern in illness anxiety and low-anxiety participants.
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Affiliation(s)
- Simona Stefan
- Department of Clinical Psychology and Psychotherapy, Babes-Bolyai University, Cluj-Napoca, Romania.,The International Institute for the Advanced Studies of Psychotherapy and Applied Mental Health, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Alexandru Zorila
- The International Institute for the Advanced Studies of Psychotherapy and Applied Mental Health, Babes-Bolyai University, Cluj-Napoca, Romania.,Evidence-Based Assessment and Psychological Interventions Doctoral School, Babes-Bolyai University, Cluj-Napoca, Romania
| | - Elena Brie
- Department of Clinical Psychology and Psychotherapy, Babes-Bolyai University, Cluj-Napoca, Romania
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Leonidou C, Panayiotou G. How do illness-anxious individuals process health-threatening information? A systematic review of evidence for the cognitive-behavioral model. J Psychosom Res 2018; 111:100-115. [PMID: 29935741 DOI: 10.1016/j.jpsychores.2018.06.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 05/29/2018] [Accepted: 06/01/2018] [Indexed: 01/17/2023]
Abstract
UNLABELLED According to the cognitive-behavioral model, illness anxiety is developed and maintained through biased processing of health-threatening information and maladaptive responses to such information. OBJECTIVE This study is a systematic review of research that attempted to validate central tenets of the cognitive-behavioral model regarding etiological and maintenance mechanisms in illness anxiety. METHODS Sixty-two studies, including correlational and experimental designs, were identified through a systematic search of databases and were evaluated for their quality. RESULTS Outcomes were synthesized following a qualitative thematic approach under categories of theoretically driven mechanisms derived from the cognitive-behavioral model: attention, memory and interpretation biases, perceived awareness and inaccuracy in perception of somatic sensations, negativity bias, emotion dysregulation, and behavioral avoidance. CONCLUSIONS Findings partly support the cognitive-behavioral model, but several of its hypothetical mechanisms only receive weak support due to the scarcity of relevant studies. Directions for future research are suggested based on identified gaps in the existing literature.
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Affiliation(s)
| | - Georgia Panayiotou
- Department of Psychology, University of Cyprus, Cyprus; Center of Applied Neuroscience, University of Cyprus, Cyprus
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Kaur A, Butow PN, Sharpe L. Health threat increases attentional bias for negative stimuli. J Behav Ther Exp Psychiatry 2013; 44:469-76. [PMID: 23872228 DOI: 10.1016/j.jbtep.2013.06.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 04/15/2013] [Accepted: 06/20/2013] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND OBJECTIVES Although there is some evidence that health anxiety is associated with attentional bias, relatively little research has examined the role of situational threat on bias. This study examined the effect of health threat on attentional bias for negative health words. METHODS Participants completed questionnaires and were then randomized to receive either threatening or reassuring health-related feedback. Following randomization, participants completed the emotional Stroop and dot-probe tasks in a counter-balanced order. RESULTS On the emotional Stroop task, all participants took longer to name the colour of negative words, as compared to positive and neutral words. However on the dot probe task, differences in attentional bias emerged based on feedback condition. Those receiving reassuring feedback displayed a bias away from negative words while those receiving threatening feedback did not display a bias either towards or away from negative words. Following reassuring feedback only, metacognitions were negatively correlated with attention towards positive health-related stimuli, suggesting another avenue for future research. CONCLUSIONS Health threats lead to an increase in the processing of negative information, and the effect of metacognitions on processing appears to be apparent only in the absence of health threat.
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Affiliation(s)
- Amar Kaur
- School of Psychology, The University of Sydney, NSW 2006, Australia.
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