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Review
. 2006 Dec;29(4):989-1007; abstract ix.
doi: 10.1016/j.psc.2006.09.009.

Circadian rhythm sleep disorders and phototherapy

Affiliations
Review

Circadian rhythm sleep disorders and phototherapy

Christopher D Fahey et al. Psychiatr Clin North Am. 2006 Dec.

Abstract

Circadian rhythm sleep disorders are characterized by a desynchronization between the timing of the intrinsic circadian clock and the extrinsic light-dark and social/activity cycles resulting in symptoms of excessive sleepiness and insomnia. This article explores the six recognized circadian rhythm sleep disorders: delayed sleep phase syndrome, advanced sleep phase syndrome, non-24-hour sleep-wake syndrome, irregular sleep-wake pattern, shift work sleep syndrome, and time zone change syndrome. Additionally discussed are the therapeutic roles of synchronizing agents, such as light and melatonin.

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