Treatment of rapidly cycling bipolar patient by using extended bed rest and darkness to stabilize the timing and duration of sleep.
Level 4 - case-series / case-control
Single-patient case report
PubMed 9611672 · doi:10.1016/s0006-3223(97)00542-8
What was done
A single patient with rapidly cycling bipolar disorder was treated with enforced bed rest in the dark for 14 hours nightly, later tapered to 10 hours. Over several years, clinical state and sleep were monitored using twice-daily self-ratings, weekly observer ratings, continuous wrist actigraphy, sleep logs, polygraphy, and computer-based event recordings.
What was found
The abstract reports no numerical metrics or statistical values. It states qualitatively that the patient exhibited rapid cycling between depression and mania with marked fluctuations in sleep timing and duration under baseline routines, but experienced stabilization of both sleep and mood during adherence to the extended dark/bed-rest protocol.
Why it matters
It provides an early clinical proof-of-concept that circadian stabilization via darkness and extended rest may help manage rapid-cycling bipolar disorder.
Limits
Single-patient case report (n = 1) with no control condition. The abstract provides no quantitative outcome measures, and the high burden of 10 to 14 hours of nightly dark rest limits real-world feasibility.
Cited by
- supports Thomas Wehr conducted a study at NIMH placing a treatment-resistant bipolar patient in 12 hours of darkness daily for about a year, resulting in remission of cycling.