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Longitudinal course of bipolar I disorder
Ivan W Miller1, Lisa A Uebelacker, Gabor I Keitner
1Department of Psychiatry and Human Behavior, Brown University School of Medicine, Butler Hospital, Providence, RI, USA.
Comprehensive Psychiatry
|November 5, 2004
Summary
Bipolar I disorder patients were asymptomatic 59% of the time, with a median mood episode length of one month. This study tracked symptom fluctuations over 23.7 months.
Area of Science:
- Psychiatry
- Clinical Psychology
Background:
- Bipolar I disorder presents with significant mood fluctuations.
- Understanding the longitudinal course of symptoms is crucial for effective management.
Purpose of the Study:
- To characterize the month-by-month course of bipolar I disorder symptoms.
- To quantify time spent in symptomatic and asymptomatic states.
Main Methods:
- Monthly assessment of 61 bipolar I disorder patients over a mean of 23.7 months.
- Utilized Modified Hamilton Rating Scale for Depression (MHRSD) and Bech-Rafaelson Mania Scale (BRMS).
- Categorized participants as fully symptomatic, partially symptomatic, or asymptomatic.
Main Results:
- Median time asymptomatic was 59%, partially symptomatic was 22%, and fully symptomatic was 8%.
- Median acute mood episode length was 1 month.
- Patients experienced an average of one episode every 8 months.
Conclusions:
- Bipolar I disorder course shows significant periods of asymptomatic states.
- Findings align with existing data on symptom burden and episode frequency.