Circadian rhythm sleep-wake disorder, shift work type
Definition
Circadian rhythm sleep-wake disorder, shift work type is characterised by complaints of insomnia and/or excessive sleepiness that occur as a result of work shifts that overlap with all or a portion of conventional nighttime sleep periods. The disorder is also associated with a reduction in total sleep time. The symptoms should have persisted for at least several months and result in significant distress or mental, physical, social, occupational or academic impairment.
Also indexed as
Circadian rhythm sleep-wake disorder, shift work type