alexa Diagnostic validity of comorbid bipolar disorder and obsessive-compulsive disorder: a systematic review.
Psychiatry

Psychiatry

Journal of Depression and Anxiety

Author(s): Amerio A, Odone A, Liapis CC, Ghaemi SN

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Abstract OBJECTIVE: At least 50\% of bipolar disorder (BD) patients have an additional diagnosis, one of the most difficult to manage being obsessive-compulsive disorder (OCD). Defining the nosology of BD-OCD comorbidity has important clinical implications, given that treatments for OCD can worsen BD outcomes. METHOD: A systematic review was conducted on: i) BD-OCD comorbidity lifetime prevalence and ii) on standard diagnostic validators: phenomenology, course of illness, heredity, biological markers, and treatment response. Relevant papers published through March 30th 2013 were identified searching the electronic databases MEDLINE, Embase, PsycINFO, and the Cochrane Library. RESULTS: Sixty-four articles met inclusion criteria. Lifetime comorbidity prevalence was 11-21\% in BD patients and 6-10\% in OCD patients. Compared to non-comorbid subjects, BD-OCD has a more episodic course of OC symptoms (up to 75\% vs. 3\%), typically with worsening during depression (78\%) and improvement during mania/hypomania (64\%), as well as a higher total mean number of depressive episodes (8.9±4.2 vs. 4.1±2.7) and perhaps more antidepressant-induced mania/hypomania (39\% vs. 9\%). CONCLUSION: In this first systematic review of BD-OCD comorbidity, it appears that OC symptoms are usually secondary to BD, rather than representing a separate disease. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. This article was published in Acta Psychiatr Scand and referenced in Journal of Depression and Anxiety

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