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  • Title: Obsessive-compulsive disorder in bipolar disorder patients with first manic episode.
    Author: Pashinian A, Faragian S, Levi A, Yeghiyan M, Gasparyan K, Weizman R, Weizman A, Fuchs C, Poyurovsky M.
    Journal: J Affect Disord; 2006 Aug; 94(1-3):151-6. PubMed ID: 16753221.
    Abstract:
    BACKGROUND: Evidence indicates that obsessive--compulsive disorder (OCD) co-occurs with schizophrenia and bipolar disorder (BD) at a higher rate than in the general population. The inflated rate of comorbidity may result from chronic illness, antipsychotic therapy or treatment-seeking behavior. To control for these factors we evaluated the prevalence of OCD in patients with first-episode acute mania who met DSM-IV criteria for BD-I, and compared them with our previously reported group of first-episode schizophrenia patients. METHOD: Fifty-six BD-I patients with a first-episode of acute mania were screened for OCD and additional comorbid disorders using the Structured Clinical Interview for DSM-IV Axis-I disorders and appropriate rating scales. RESULTS: Only one patient (1.8%) met DSM-IV criteria for OCD, and two (3.6%) met criteria for sub-threshold OCD. In contrast, there was a substantial aggregation of substance use disorders 32.1% (N=8), anxiety disorders, other than OCD 26.8% (N=15) and eating disorders 14.3% (N=8). LIMITATIONS: Small sample size, cross-sectional nature of the assessments and the inclusion of only BD-I patients. CONCLUSION: The rate of OCD in first-episode BD-I patients did not differ significantly from that found in the general population and was substantially lower than in previously reported first-episode schizophrenia patients (1.8% vs. 14%). We suggest that a preferential association of OCD with schizophrenia early in the course of illness represents a pathophysiological linkage between the two disorders, and putatively a specific schizo-obsessive subtype. In contrast, OCD in BD-I may stand for "true" comorbidity. Large-scale parallel comparative evaluations of comorbidity in BD-I and schizophrenia may contribute to the search for specific pathophysiological mechanisms of distinct comorbid-related subsets in either disorder.
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