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Is bipolar II a unique disorder?

D J Kupfer1, L L Carpenter, E Frank

  • 1Department of Psychiatry, University of Pittsburgh School of Medicine, Western Psychiatric Institute and Clinic, PA 15213.

Comprehensive Psychiatry
|May 1, 1988
PubMed
Summary

Bipolar II disorder and unipolar depression patients share similarities, particularly in recurrent depressive episodes. Findings suggest combining these groups for treatment may be effective.

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Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Neuroscience

Background:

  • Differentiating between bipolar II disorder and unipolar depression is clinically significant.
  • Recurrent depressive episodes are a common feature in both conditions.
  • Understanding distinct characteristics aids in targeted treatment strategies.

Purpose of the Study:

  • To investigate differences and similarities between bipolar II disorder and unipolar depression outpatients.
  • To compare clinical characteristics, treatment response, personality profiles, and family history.
  • To evaluate the potential for combining these patient groups in treatment.

Main Methods:

  • Comparative study of 27 bipolar II outpatients (definite RCD criteria) and 188 unipolar outpatients.
  • Assessment of clinical characteristics, acute treatment response, personality profiles post-recovery, and family history.
  • Analysis of diagnostic criteria and patient selection for treatment protocols.

Main Results:

  • Bipolar II patients exhibited higher paternal morbid risk for depression, increased past suicidal attempts, and more psychomotor retardation.
  • Similarities were observed between the groups on other examined variables, potentially due to strict inclusion criteria.
  • The study identified specific differentiating factors and shared characteristics.

Conclusions:

  • Despite some differences, bipolar II and unipolar depression patients show considerable overlap, especially in recurrent depressive episodes.
  • The findings support the potential for effectively combining these groups for the treatment of recurrent depressive episodes.
  • Further research may refine treatment approaches based on these combined group characteristics.

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