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Álvarez-Cadenas L, García-Vázquez P, Ezquerra B, Stiles BJ, Lahera G, Andrade-González N, Vieta E. Detection of bipolar disorder in the prodromal phase: A systematic review of assessment instruments. J Affect Disord 2023; 325:399-412. [PMID: 36623571 DOI: 10.1016/j.jad.2023.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/22/2022] [Accepted: 01/03/2023] [Indexed: 01/08/2023]
Abstract
BACKGROUND Early detection of prodromal symptoms may contribute to improving the prognosis of patients with bipolar disorder (BD). The main objective of this systematic review is to present the different procedures for the identification of initial and relapse prodromes in these patients. METHODS PsycINFO, Web of Science and PubMed databases were searched using a predetermined strategy, until January 4, 2022. Then, by means of a regulated process, studies that used a BD prodrome detection procedure, in English-language and all ages participants were selected. Quantitative and qualitative studies were assessed using a modified version of the Newcastle-Ottawa Scale and by Critical Appraisals Skills Programme checklist, respectively. RESULTS Forty-five studies were selected. Of these, 26 used procedures for identifying initial prodromes (n = 8014) and 19 used procedures for detecting relapse prodromes (n = 1136). The interview was the most used method in the detection of both types of prodromes (k = 30 papers, n = 4068). It was variable in its degree of structure. Mobile applications and digital technologies are gaining importance in the detection of the relapse prodromes. LIMITATIONS A retrospective design in most papers, small samples sizes, existence of persistent subsyndromal symptoms and difficulty to identify the end of the prodrome and the onset of the disorder. CONCLUSIONS There is a wide variety of assessment instruments to detect prodromes in BD, among which the clinical interview is most frequently used. Future research should consider development of a brief tool to be applied in different formats to patients and family members.
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Affiliation(s)
- Laura Álvarez-Cadenas
- Central University Hospital of Asturias, Health Service of Principality of Asturias, Oviedo, Spain.
| | - Paula García-Vázquez
- Central University Hospital of Asturias, Health Service of Principality of Asturias, Oviedo, Spain
| | - Berta Ezquerra
- Rey Juan Carlos University Hospital, Móstoles, Madrid, Spain
| | - Bryan J Stiles
- Department of Psychology and Neuroscience, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Guillermo Lahera
- Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain; IRyCIS, CIBERSAM, Madrid, Spain; Príncipe de Asturias University Hospital, Alcalá de Henares, Madrid, Spain
| | - Nelson Andrade-González
- Psychiatry and Mental Health Research Group, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain; Faculty of Medicine, Alfonso X el Sabio University, Villanueva de la Cañada, Madrid, Spain
| | - Eduard Vieta
- Bipolar and Depressive Disorders Unit, Hospital Clinic, Institute of Neuroscience, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Spain
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Fletcher K, Lindblom K, Seabrook E, Foley F, Murray G. Pilot Testing in the Wild: Feasibility, Acceptability, Usage Patterns, and Efficacy of an Integrated Web and Smartphone Platform for Bipolar II Disorder. JMIR Form Res 2022; 6:e32740. [PMID: 35639462 PMCID: PMC9198820 DOI: 10.2196/32740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 03/25/2022] [Accepted: 03/29/2022] [Indexed: 11/24/2022] Open
Abstract
Background Bipolar II disorder (BD-II) is associated with significant burden, disability, and mortality; however, there continues to be a dearth of evidence-based psychological interventions for this condition. Technology-mediated interventions incorporating self-management have untapped potential to help meet this need as an adjunct to usual clinical care. Objective The objective of this pilot study is to assess the feasibility, acceptability, and clinical utility of a novel intervention for BD-II (Tailored Recovery-oriented Intervention for Bipolar II Experiences; TRIBE), in which mindfulness-based psychological content is delivered via an integrated web and smartphone platform. The focus of the study is evaluation of the dynamic use patterns emerging from ecological momentary assessment and intervention to assist the real-world application of mindfulness skills learned from web-delivered modules. Methods An open trial design using pretest and posttest assessments with nested qualitative evaluation was used. Individuals (aged 18-65 years) with a diagnosis of BD-II were recruited worldwide and invited to use a prototype of the TRIBE intervention over a 3-week period. Data were collected via web-based questionnaires and phone interviews at baseline and 3-week follow-up. Results A total of 25 participants completed baseline and follow-up assessments. Adherence rates (daily app use) were 65.6% across the 3-week study, with up to 88% (22/25) of participants using the app synergistically alongside the web-based program. Despite technical challenges with the prototype intervention (from user, hardware, and software standpoints), acceptability was adequate, and most participants rated the intervention positively in terms of concept (companion app with website: 19/25, 76%), content (19/25, 76%), and credibility and utility in supporting their management of bipolar disorder (17/25, 68%). Evaluation using behavioral archetypes identified important use pathways and a provisional model to inform platform refinement. As hypothesized, depression scores significantly decreased after the intervention (Montgomery-Asberg Depression Rating Scale baseline mean 8.60, SD 6.86, vs follow-up mean 6.16, SD 5.11; t24=2.63; P=.01; Cohen d=0.53, 95% CI 0.52-4.36). Conclusions Our findings suggest that TRIBE is feasible and represents an appropriate and acceptable self-management program for patients with BD-II. Preliminary efficacy results are promising and support full development of TRIBE informed by the present behavioral archetype analysis. Modifications suggested by the pilot study include increasing the duration of the intervention and increasing technical support.
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Affiliation(s)
- Kathryn Fletcher
- Centre for Mental Health, Swinburne University of Technology, Melbourne, Australia
| | - Katrina Lindblom
- Centre for Mental Health, Swinburne University of Technology, Melbourne, Australia
| | - Elizabeth Seabrook
- Centre for Mental Health, Swinburne University of Technology, Melbourne, Australia
| | - Fiona Foley
- Centre for Mental Health, Swinburne University of Technology, Melbourne, Australia
| | - Greg Murray
- Centre for Mental Health, Swinburne University of Technology, Melbourne, Australia
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Bai W, Feng Y, Sha S, Zhang Q, Cheung T, Zhang D, Su Z, Ng CH, Xiang YT. Comparison of Hypomanic Symptoms Between Bipolar I and Bipolar II Disorders: A Network Perspective. Front Psychiatry 2022; 13:881414. [PMID: 35633807 PMCID: PMC9135060 DOI: 10.3389/fpsyt.2022.881414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/04/2022] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Hypomanic symptoms between bipolar-I disorder (BD-I) and bipolar-II disorder (BD-II) are often indistinguishable in clinical practice. This study compared the network structure of hypomanic symptoms between patients with BD-I and BD-II. METHODS The 32-item Hypomania Checklist (HCL-32) was used to assess hypomanic symptoms. Network model was generated in BD-I and BD-II patients. Centrality index of strength was used to quantify the importance of each symptom in the network. The Network Comparison Test (NCT) was used to assess the differences in hypomanic symptoms between BD-I and BD-II patients. RESULTS Altogether, 423 patients with BD (BD-I: 191 and BD-II: 232) were included. The most central symptom was HCL17 "I am more flirtatious and/or am more sexually active" (strength BD-I = 5.21) and HCL12 "I have more ideas, I am more creative" (strength BD-II = 6.84) in BD-I and BD-II samples, respectively. The results of NCT showed that four nodes (HCL12 "I have more ideas, I am more creative," HCL17 "I am more flirtatious and/or am more sexually active," HCL23 "My thoughts jump from topic to topic," and HCL31 "I drink more alcohol") were significantly different between the BD-I and BD-II samples. Two edges (HCL3 "I am more self-confident"-HCL17 "I am more flirtatious and/or am more sexually active," and HCL10 "I am physically more active (sport, etc.)"-HCL24 "I do things more quickly and/or more easily") were significantly stronger in BD-I compared to BD-II patients. CONCLUSION The network structure of hypomanic symptoms is different between BD-I and BD-II patients. Interventions targeting the respective central symptoms and edges should be developed for BD-I and BD-II separately.
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Affiliation(s)
- Wei Bai
- Unit of Psychiatry, Department of Public Health and Medicinal Administration, Faculty of Health Sciences, Institute of Translational Medicine, University of Macau, Macao, Macao SAR, China.,Center for Cognition and Brain Sciences, University of Macau, Macao, Macao SAR, China.,Institute of Advanced Studies in Humanities and Social Sciences, University of Macau, Macao, Macao SAR, China
| | - Yuan Feng
- The National Clinical Research Center for Mental Disorders & Beijing Key Laboratory of Mental Disorders Beijing Anding Hospital & The Advanced Innovation Center for Human Brain Protection, School of Mental Health, Capital Medical University, Beijing, China
| | - Sha Sha
- The National Clinical Research Center for Mental Disorders & Beijing Key Laboratory of Mental Disorders Beijing Anding Hospital & The Advanced Innovation Center for Human Brain Protection, School of Mental Health, Capital Medical University, Beijing, China
| | - Qinge Zhang
- The National Clinical Research Center for Mental Disorders & Beijing Key Laboratory of Mental Disorders Beijing Anding Hospital & The Advanced Innovation Center for Human Brain Protection, School of Mental Health, Capital Medical University, Beijing, China
| | - Teris Cheung
- School of Nursing, The Hong Kong Polytechnic University, Hong Kong, Hong Kong SAR, China
| | - Dexing Zhang
- Faculty of Medicine, Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Zhaohui Su
- School of Public Health, Southeast University, Nanjing, China
| | - Chee H Ng
- Department of Psychiatry, The Melbourne Clinic and St Vincent's Hospital, University of Melbourne, Melbourne, VIC, Australia
| | - Yu-Tao Xiang
- Unit of Psychiatry, Department of Public Health and Medicinal Administration, Faculty of Health Sciences, Institute of Translational Medicine, University of Macau, Macao, Macao SAR, China.,Center for Cognition and Brain Sciences, University of Macau, Macao, Macao SAR, China.,Institute of Advanced Studies in Humanities and Social Sciences, University of Macau, Macao, Macao SAR, China
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Towards tailored psychosocial intervention for BD-II: Lived experience perspectives on current and future management options. J Affect Disord 2021; 289:110-116. [PMID: 33975089 DOI: 10.1016/j.jad.2021.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 03/29/2021] [Accepted: 04/16/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND Despite its significant morbidity and mortality, very little is known about how those with lived experience of bipolar II disorder (BD-II) manage their condition. This study sought to understand unmet needs in currently available psychosocial treatments, explore self-management strategies (SMS) that individuals with BD-II currently use, and determine the potential role of digital mental health interventions in this space. METHODS Individuals (aged 18-65) confirming they had received a diagnosis of BD-II from a mental health professional were invited to complete an online survey about treatments trialled, coping strategies used to manage their condition and perspectives on the role of digital mental interventions. RESULTS Ninety individuals commencing the survey confirmed a diagnosis of BD-II; of these, n = 35 were screened out based on self-reported hospitalisation for mania and/or experiencing a manic episode. A final sample of n = 55 was subsequently analysed. From the perspective of those with BD-II, current psychosocial treatments fall short in terms of meeting their specific needs. Tailored psychosocial interventions delivered by clinicians with BD-II expertise are sought after, however accessibility and cost are ongoing barriers. Participants were open to digital self-management interventions however uptake was limited. In terms of self-management, actively seeking external help was perceived as most helpful for stopping progression in depression, while self-care strategies were prioritised for hypomania. LIMITATIONS The study had several limitations: (1) BD-II diagnoses were not formally verified via standardised diagnostic interview, (2) Borderline personality disorder and comorbid substance abuse disorders were not assessed; (3) the influence of current mood state on participant responses was not assessed, (4) females were over-represented, limiting generalisation of findings to males with BD-II. CONCLUSIONS Study findings highlight the need for tailored interventions paying specific attention to nuanced features of BD-II, and the potential role of digital mental health interventions for this underserved group.
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Wright L, Lari L, Iazzetta S, Saettoni M, Gragnani A. Differential diagnosis of borderline personality disorder and bipolar disorder: Self-concept, identity and self-esteem. Clin Psychol Psychother 2021; 29:26-61. [PMID: 33811707 DOI: 10.1002/cpp.2591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 11/28/2020] [Accepted: 03/26/2021] [Indexed: 01/04/2023]
Abstract
Symptoms of borderline personality disorder (BPD) and bipolar disorder (BD) often overlap. In some cases, it is difficult to conduct a differential diagnosis based only on current diagnostic criteria Therefore, it is important to find clinical factors with high discriminatory specificity that, used together with structured or semi-structured interviews, could help improve diagnostic practice. We propose that a clinical analysis of identity, self-concept and self-esteem may help distinguish the two disorders, when they are not co-morbid. Our review of the studies that analyse these constructs in BD and BPD, separately, points in the direction of qualitative differences between the two disorders. In BPD, there is a well-documented identity diffusion, and the self-concept appears predominantly negative; shifts in self-concept and self-esteem are often tied to interpersonal triggers. In BD, patients struggle with their identity, but narrative identity might be less compromised compared with BPD; the shifts in self-concept and self-esteem appear more linked to internal (i.e. mood and motivational) factors. We end the paper by discussing the implications for clinicians and ideas for future comparative research.
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Affiliation(s)
- Livia Wright
- Scuola di Psicoterapia Cognitiva SRL, Grosseto, Italy
| | - Lisa Lari
- Scuola di Psicoterapia Cognitiva SRL, Grosseto, Italy
| | | | - Marco Saettoni
- Scuola di Psicoterapia Cognitiva SRL, Grosseto, Italy.,Unità Funzionale Salute Mentale Adulti, ASL Toscana Nord-Ovest Valle del Serchio, Pisa, Italy
| | - Andrea Gragnani
- Scuola di Psicoterapia Cognitiva SRL, Grosseto, Italy.,Unità Funzionale Salute Mentale Adulti, ASL Toscana Nord-Ovest Valle del Serchio, Pisa, Italy.,Scuola di Psicoterapia Cognitiva SRL, Rome, Italy
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Andrade-González N, Álvarez-Cadenas L, Saiz-Ruiz J, Lahera G. Initial and relapse prodromes in adult patients with episodes of bipolar disorder: A systematic review. Eur Psychiatry 2020; 63:e12. [PMID: 32093795 PMCID: PMC7315869 DOI: 10.1192/j.eurpsy.2019.18] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Distinguishing prodromes of bipolar disorder (BD) specific to children/adolescents, adults, and elderly patients is essential. The primary objective of this systematic review was to determine initial and relapse prodromes identifying adult patients with BD. METHODS PubMed, PsycINFO, and Web of Science databases were searched using a predetermined strategy. A controlled process of study selection and data extraction was performed. RESULTS The 22 articles selected included 1,809 adult patients with BD. Initial prodromes cited most frequently in these studies showed low specificity. Among relapse prodromes cited most frequently, more talkative than usual, increased energy/more goal-directed behavior, thoughts start to race, increased self-esteem, strong interest in sex, increase in activity, and spending too much were identified exclusively before a manic/hypomanic episode, while loss of interest and hypersomnia were detected only before a depressive episode. Initial prodromal phases lasted longer than prodromal relapse phases. In the selected studies, the most used prodrome identification procedure was the clinical interview. CONCLUSIONS For adult patients with BD, initial and relapse prodromes of manic, hypomanic, and depressive episodes were identified. It is proposed that the most frequent prodromes found in this review be incorporated into a smartphone app that monitors the functioning of people at risk of BD and patients who have already been diagnosed. Data from this app would constitute a relevant source of big data.
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Affiliation(s)
- Nelson Andrade-González
- Relational Processes and Psychotherapy Research Group, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain
| | | | - Jerónimo Saiz-Ruiz
- Ramón y Cajal University Hospital, Madrid, Spain.,Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain.,IRyCIS, CIBERSAM, Madrid, Spain
| | - Guillermo Lahera
- Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain.,IRyCIS, CIBERSAM, Madrid, Spain
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'What people diagnosed with bipolar disorder experience as distressing': A meta-synthesis of qualitative research. J Affect Disord 2019; 248:108-130. [PMID: 30731279 DOI: 10.1016/j.jad.2019.01.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 01/10/2019] [Accepted: 01/19/2019] [Indexed: 01/27/2023]
Abstract
BACKGROUND Bipolar disorder (BD) is considered to have a significantly negative impact on functioning and prognosis is considered poor. Current treatments are modestly effective and predominantly focus on reducing extreme mood fluctuations and symptoms, yet less is known about what patients themselves describe as distressing. Therefore we aimed to assess this through a systematic review. METHODS A comprehensive literature search was conducted in four major bibliographic databases in August 2017, updated in July 2018. Qualitative studies exploring BD were included if they contained themes related to distress. First person accounts from people with BD discussing what they experience as distressing were extracted and synthesised using thematic synthesis. Author interpretations were also extracted to support the synthesis. RESULTS Twenty-four studies were included. Five main analytical themes were developed: 1) diagnosis, 2) loss, 3) uncertainty, 4) threat and 5) relationships. Two further crosscutting themes were identified as 1) stigma and 2) fear of relapse. Implications for interventions to focus on these causes of distress also emerged. LIMITATIONS The included studies did not adequately examine the authors' potential own biases and influences within their interpretations of the data. One author predominantly undertook data extraction and coding for the current review, although research team discussions led to an agreed consensus on themes. CONCLUSIONS This was the first qualitative study to specifically explore distress in BD. The meta-synthesis highlights important areas that people with BD experience as distressing. Adaptations to current interventions, to focus on what people find distressing could seek to improve treatment outcomes.
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Kelly RE, Dodd AL, Mansell W. "When my Moods Drive Upward There Is Nothing I Can Do about It": A Review of Extreme Appraisals of Internal States and the Bipolar Spectrum. Front Psychol 2017; 8:1235. [PMID: 28824476 PMCID: PMC5543079 DOI: 10.3389/fpsyg.2017.01235] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Accepted: 07/06/2017] [Indexed: 11/15/2022] Open
Abstract
The integrative cognitive model provides a comprehensive account of bipolar disorder (BD) that, if empirically supported, has important potential implications for psychological therapies. This article is the first to review the evidence for this model. We evaluate the evidence (up to 2017) for four hypotheses derived uniquely from the model: extreme positive and negative appraisals of internal states are associated with (1) risk of developing BD; (2) BD diagnosis; (3) relevant clinical and functional outcomes including hypomanic and depressive mood symptoms; and (4) outcomes over time. Research involving individuals with diagnosed mood disorders as well as non-clinical populations is reviewed. The hypotheses were broadly supported and several consistent findings were not accounted for by alternative psychological models of BD. The evidence base is limited by a relative paucity of prospective studies; only 6 of the 31 studies identified. Implications for theory, research and clinical practice are discussed.
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Affiliation(s)
- Rebecca E Kelly
- Psychological Interventions Clinic for Outpatients with Psychosis, Maudsley Psychology Centre, South London and Maudsley NHS Foundation TrustLondon, United Kingdom
| | - Alyson L Dodd
- Department of Psychology, Northumbria UniversityNewcastle-upon-Tyne, United Kingdom
| | - Warren Mansell
- School of Psychological Sciences, Faculty of Medical and Human Sciences, University of ManchesterManchester, United Kingdom
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Coping profiles in bipolar disorder. Compr Psychiatry 2013; 54:1177-84. [PMID: 23810079 DOI: 10.1016/j.comppsych.2013.05.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 05/20/2013] [Accepted: 05/22/2013] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE As coping responses have the capacity to distinctly influence the illness course in affective disorders, they form targets for psychological intervention. Beneficial effects have been reported for interventions incorporating adaptive coping in bipolar disorder. Identification of differential coping preferences in bipolar disorder sub-types has etiological and clinical implications. As most studies to date have focused exclusively on bipolar I disorder, the current study examines coping profiles in those with a bipolar I or II disorder, contrasted with unipolar depressive and healthy controls. METHODS Groups were derived on the basis of agreement between clinician and DSM-IV diagnoses. Participants (94 bipolar I, 114 bipolar II, 109 unipolar recurrent depression, 100 healthy controls) completed coping style measures including the Brief Cope, Responses to Positive Affect questionnaire, Response Styles Questionnaire, the Coping Inventory for Prodromes of Mania, and the Cognitive Emotion Regulation Questionnaire. RESULTS Bipolar (I and II) participants were more likely than unipolar participants to ruminate about positive affect, and engage in risk taking when faced with negative affect. Medication status and current mood symptoms influenced risk-taking scores in the bipolar sub-sets, however rumination about positive affect appeared to represent a trait-like response in those with a bipolar II disorder. Behavioral coping strategies differentiated bipolar sub-types, with bipolar II participants being less likely to seek support when faced with stress, and less likely to engage in strategies to down-regulate hypomania. CONCLUSION Coping style differences were observed between bipolar sub-types. Further consideration of such differentiating characteristics should serve to direct the focus towards specific targets for clinical intervention, reflecting nuances integral to the differing conditions.
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Fletcher K, Parker G, Manicavasagar V. Behavioral Activation System (BAS) differences in bipolar I and II disorder. J Affect Disord 2013; 151:121-8. [PMID: 23810478 DOI: 10.1016/j.jad.2013.05.061] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 05/23/2013] [Accepted: 05/23/2013] [Indexed: 11/19/2022]
Abstract
BACKGROUND A growing body of evidence supports the Behavioral Activation System (BAS) dyresgulation model of bipolar disorder, however its application to bipolar II disorder is limited. The current study examines its potential relevance to bipolar I and II disorders. We specifically sought to determine whether bipolar sub-types would differ in terms of BAS sensitivity, and examined for differential prospective relationships between BAS sensitivity and bipolar I and II symptom expression. METHOD Participants were recruited from the Sydney-based Black Dog Institute. Diagnostic groups were derived on the basis of agreement between clinician and DSM-IV diagnoses from structured interviews. Baseline measures of BAS sensitivity, mood symptoms and anxiety were completed. Self-rated mood was assessed over a 6-month period. Clinician-rated mood status was re-assessed at follow-up to determine the predictive utility of BAS scores. RESULTS The sample comprised 151 bipolar participants (69 bipolar I, 82 bipolar II). BAS-Drive and Reward Responsiveness scores were significantly higher in bipolar I disorder participants. BAS sub-scale scores were uniquely positively associated with mood variability in bipolar I and II disorder. BAS-Drive and Reward Responsiveness scores were positively associated with bipolar I hypo(mania), and with the former also positively associated with bipolar II depression. BAS scores did not predict bipolar I or II mood episode status at 6-month follow-up. LIMITATIONS BAS sensitivity was self-reported; inability to establish independence of BAS scores from residual symptoms; lack of controlling for medication effects; inability to determine the influence of life events; length of follow-up period may have not been sufficient to evaluate the predictive utility of BAS sensitivity for mood episodes or detect course of illness differences across bipolar sub-types. CONCLUSIONS Differences in BAS sensitivity and associations with mood variability were quantified in bipolar I and II disorder, suggesting the need for tailored treatments for these separate conditions. Further investigation of the role of the BAS in bipolar sub-types is warranted.
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Affiliation(s)
- Kathryn Fletcher
- School of Psychiatry, University of New South Wales, NSW, Australia.
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