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[Bipolar II disorder: course and suicidal behavior]

E Vieta1, F Colom, C Gastó

  • 1Subdivisión de Psiquiatría y Psicología Clínica Hospital Clínic, Barcelona, España.

Actas Luso-Espanolas De Neurologia, Psiquiatria Y Ciencias Afines
|May 1, 1997
PubMed
Summary

Bipolar II disorder patients experience more frequent episodes than Bipolar I, but with less severe symptoms and no significant difference in suicidal behavior. This suggests Bipolar II is more frequent but less intense than Bipolar I.

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Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Neuroscience

Background:

  • Bipolar II disorder is often considered distinct from Bipolar I, with potential differences in genetics, biology, and clinical presentation.
  • Previous research on suicidal behavior in Bipolar I and II disorders has yielded inconsistent findings.

Purpose of the Study:

  • To compare clinical characteristics and suicidal behavior between patients diagnosed with Bipolar I and Bipolar II disorders.
  • To investigate if suicidal behavior can differentiate between Bipolar I and Bipolar II disorder diagnoses.

Main Methods:

  • Utilized the Schedule for Affective Disorders and Schizophrenia for evaluation.
  • Employed two independent interviewers for diagnostic assessment.
  • Compared 22 patients with Bipolar II disorder against 38 patients with Bipolar I disorder.

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Main Results:

  • Bipolar II patients exhibited significantly more episodes, including depressive and hypomanic episodes.
  • Bipolar II patients had fewer hospitalizations and psychotic symptoms compared to Bipolar I patients.
  • No significant differences were found between the two groups concerning suicidal behavior variables.

Conclusions:

  • Bipolar II disorder appears less severe in terms of symptom intensity but more severe regarding episode frequency compared to Bipolar I.
  • Suicide attempt rates do not serve as a reliable factor to distinguish between Bipolar I and Bipolar II disorders.
  • Further research is warranted to fully elucidate the distinctions and similarities between Bipolar I and Bipolar II disorders.