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  • Title: The comorbidity of bipolar disorder and axis II personality disorders: prevalence and clinical correlates.
    Author: George EL, Miklowitz DJ, Richards JA, Simoneau TL, Taylor DO.
    Journal: Bipolar Disord; 2003 Apr; 5(2):115-22. PubMed ID: 12680901.
    Abstract:
    OBJECTIVES: Many studies have examined the prevalence and predictive validity of axis II personality disorders among unipolar depressed patients, but few have examined these issues among bipolar patients. The few studies that do exist suggest that axis II pathology complicates the diagnosis and course of bipolar disorder. This study examined the prevalence of axis II disorder in bipolar patients who were clinically remitted. METHODS: We assessed the co-occurrence of personality disorder among 52 remitted DSM-III-R bipolar patients using a structured diagnostic interview, the Personality Disorder Examination (PDE). RESULTS: Axis II disorders can be rated reliably among bipolar patients who are in remission. Co-diagnosis of personality disorder occurred in 28.8% of patients. Cluster B (dramatic, emotionally erratic) and cluster C (fearful, avoidant) personality disorders were more common than cluster A (odd, eccentric) disorders. Bipolar patients with personality disorders differed from bipolar patients without personality disorders in the severity of their residual mood symptoms, even during remission. CONCLUSIONS: When structured assessment of personality disorder is performed during a clinical remission, less than one in three bipolar patients meets full syndromal criteria for an axis II disorder. Examining rates of comorbid personality disorder in broad-based community samples of bipolar spectrum patients would further clarify the linkage between these sets of disorders.
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