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Risk for bipolar illness in patients initially hospitalized for unipolar depression
J F Goldberg1, M Harrow, J E Whiteside
1Department of Psychiatry, Weill Medical College of Cornell University, NY, USA. jfgoldbe@mail.med.cornell.edu
The American Journal of Psychiatry
|August 2, 2001
Summary
Young adults hospitalized for unipolar major depression face a significant risk of developing mania or hypomania over 15 years. Psychotic features during depression increase this risk, highlighting the need for careful monitoring and management.
Area of Science:
- Psychiatry
- Clinical Psychology
- Neuroscience
Background:
- Unipolar major depression is a common mental health condition.
- A subset of patients with unipolar depression may experience a shift towards bipolar disorder.
- Early identification of risk factors is crucial for effective intervention.
Purpose of the Study:
- To determine the long-term risk of developing mania or hypomania in young adults initially hospitalized for unipolar major depression.
- To identify predictors of polarity conversion from unipolar depression to bipolar spectrum disorders.
Main Methods:
- A 15-year prospective follow-up study of 74 young adults hospitalized for unipolar major depression.
- Standardized assessments were conducted at multiple time points (2, 5, 8, 11, and 15 years post-discharge).
- Survival analyses were used to evaluate polarity conversions.
Main Results:
- By 15 years, 27% developed hypomania and 19% developed bipolar I mania.
- Depressed patients with psychosis at index hospitalization were significantly more likely to develop mania/hypomania.
- Family history of bipolar illness showed a nonsignificantly higher switching rate.
Conclusions:
- Young depressed inpatients with psychotic features are at high risk for developing mania.
- The risk for bipolar spectrum disorder increases linearly over 10-15 years post-depression episode.