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KMID : 1007420130110030170
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Mood and Emotion
2013 Volume.11 No. 3 p.170 ~ p.174
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Differentiating between Bipolar Disorder Types I and II Focusing on Depressive Symptoms : A Preliminary Study
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Kim In-Woo
Woo Young-Sup
Jun Tae-Youn
Kim Kwang-Soo
Bahk Won-Myong
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Abstract
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Objectives : Bipolar I Disorder (BD I) and Bipolar II Disorder (BD II) may differ in symptomatology, management and prognosis. This study aimed to examine the differences in clinical features between BD I and BD II during their depressive episodes for distinguishing between these two conditions.
Methods : Patients with BD I (n=79) and BD II (n=39) were included, based on DSM-IV-TR criteria. The data about demographics, clinical features, depressive symptoms and comorbid conditions were collected through medical records retrospectively. We used t-tests and chi-square analyses for a comparison of means. And for variables found to be significant, a multivariable logistic regression was done.
Results : Patients with BD II were more likely to be unemployed and more frequently accompanied by comorbid personality disorder. When comparing clinical features of depressive episodes, irritability, indecisiveness, weight gain and hypersomnia were more frequently observed in patients with BD II. In the regression analysis, variables predictive of BD II were irritability and indecisiveness.
Conclusion : Patient with BD I and BD II showed some different clinical features during depressive episodes. Our results may provide additional evidence supporting the distinction of BD I and BD II.
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KEYWORD
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Bipolar I disorder, Bipolar II disorder, Depressive symptom
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