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Related Experiment Videos

Is winter depression a bipolar disorder?

D M White1, A J Lewy, R L Sack

  • 1Department of Psychiatry, Oregon Health Sciences University, Portland 97201.

Comprehensive Psychiatry
|May 1, 1990
PubMed
Summary
This summary is machine-generated.

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Few patients with winter depression exhibit bipolar illness. Most prominent symptoms include lack of energy, with limited evidence of mania or family history of bipolar disorder.

Area of Science:

  • Psychiatry
  • Mood Disorders
  • Seasonal Affective Disorder

Background:

  • Winter depression, a subtype of seasonal affective disorder, is characterized by mood changes linked to reduced sunlight exposure.
  • The potential overlap between winter depression and bipolar disorder requires careful clinical evaluation.

Purpose of the Study:

  • To assess the prevalence of bipolar illness in patients diagnosed with winter depression.
  • To investigate the presence of manic or hypomanic symptoms and family history of bipolar disorder in this population.

Main Methods:

  • Utilized the Schedule for Affective Disorders and Schizophrenia-Lifetime Version (SADS-L) and the General Behavior Inventory (GBI).
  • Conducted prospective evaluations during the summer following winter depressive episodes.

Related Experiment Videos

  • Assessed patient-reported prominent symptoms of winter depression.

    • Main Results:

    • Only 15% (9 out of 61) of winter depressive patients met criteria for bipolar illness.
    • Few patients displayed manic or hypomanic symptoms during summer follow-up.
    • A limited family history of bipolar illness was reported among the participants.
    • Lack of energy was identified as the most prominent symptom of winter depression.

    Conclusions:

    • Winter depression appears to be distinct from bipolar disorder in the majority of cases evaluated.
    • The prominent symptom of winter depression is a significant lack of energy.
    • Further research may clarify the specific diagnostic criteria and treatment approaches for winter depression.