Abstract
To determine if sleep abnormalities occur in obsessive–compulsive disorder (OCD), 2 nights of sleep electroencephalographic (EEG) recordings were obtained from 13 medication-free outpatients with OCD and 13 age- and sex-matched normal volunteers. Patients were awake more on night 2 than on night 1, whereas control subjects had less time awake on night 1; no other differences between groups were found on sleep latency, sleep time, minutes of movement, sleep efficiency, rapid eye movement (REM) latency or amount of stage 1, 2, 3, or 4 or REM sleep. Within the patient group, total scores on the Yale–Brown Obsessive–Compulsive Scale were negatively correlated with total sleep time ( r=−0.51, P=0.07), sleep efficiency ( r=−0.51, P=0.07), and duration of stage 1+2 sleep ( r=−0.49, P=0.09) but not with REM time ( r=−0.05, P=0.87) or latency ( r=−0.26, P=0.39). Previous sleep studies in OCD have had divergent results, especially regarding REM latency; our results suggest that many OCD patients have essentially normal sleep EEG findings.
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