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  • Title: Exploration of comorbid obsessive-compulsive disorder in patients with bipolar disorder: The clinic-based prevalence rate, symptoms nature and clinical correlates.
    Author: Jeon S, Baek JH, Yang SY, Choi Y, Ahn SW, Ha K, Hong KS.
    Journal: J Affect Disord; 2018 Jan 01; 225():227-233. PubMed ID: 28841485.
    Abstract:
    BACKGROUND: Comorbidity of bipolar disorder (BD) and obsessive-compulsive disorder (OCD) has received clinical attention. However, the detailed nature and nolosogic validity of the comorbidity have not been fully explored. This study investigated the comorbidity rate, clinical nature, and correlates of OCD in patients with BD. METHODS: Patients (n = 314) with BD were recruited and lifetime clinical characteristics were evaluated comprehensively. The comorbid OCD ('OCD-BD') group and the 'non-OC BD' group were compared in terms of the clinical variables of BD. RESULTS: OCD was found in 15.9% of patients. Earlier age at onset, more frequent pharmacological (hypo)manic switch and a higher rate of comorbid panic disorder were associated with comorbid OCD. In two-thirds (65.4%) of the OCD-BD subjects, obsessive-compulsive symptoms worsened or were confined to depressive episodes. Contamination obsession and checking compulsion were the most common types of obsessive-compulsive symptoms. Drug-induced (hypo)manic switch was observed in more than 60% of the OCD-BD subjects who were previously exposed to antidepressants. None of the OCD-BD subjects were taking antidepressants for OCD in the current specialty clinics. LIMITATIONS: Subject recruitment from specialty clinics, retrospective and cross-sectional evaluation, and difficulties in clarifying the causal relationships. CONCLUSIONS: The comorbidity rate of OCD in Korean BD patients was comparable to that of Caucasian patients. Even though OCD seems to be more often linked to depressive episodes, a heterogeneous nosologic relationship including a possibility of drug-mediated induction is suggested.
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