Circadian rhythm sleep disorders: An update
Article first published online: 5 MAY 2009
© 2009 The Authors. Journal compilation © 2009 Japanese Society of Sleep Research
Sleep and Biological Rhythms
Volume 7, Issue 2, pages 113–124, April 2009
How to Cite
SHARMA, B. and FEINSILVER, S. (2009), Circadian rhythm sleep disorders: An update. Sleep and Biological Rhythms, 7: 113–124. doi: 10.1111/j.1479-8425.2009.00393.x
- Issue published online: 26 MAY 2009
- Article first published online: 5 MAY 2009
- Accepted for publication 23 March 2009 Online published 5 May 2009.
- advanced sleep phase disorder (ASPD);
- circadian rhythm sleep disorders (CRSD);
- delayed sleep phase disorder (DSPD);
The primary symptom of circadian rhythm sleep disorders (CRSDs) is the inability to sleep during the desired sleep time. CRSDs are divided into two broad classes: (i) disorders not related to forced alterations of the sleep–wake schedule or light–dark cycle (including advanced sleep phase disorder [ASPD], delayed sleep phase disorder [DSPD], non-entrained type [NET], and irregular sleep–wake rhythm [ISWR]); and (ii) disorders related to forced alterations of the sleep–wake schedule or light–dark cycle (including shift work sleep disorder [SWSD], jet lag disorder [JLD], and CRSDs related to diseases and medications). DSPD and ASPD are the common primary circadian rhythm disorders. We discuss the recent developments in the pathogenesis, diagnosis, and management of CRSDs.