Clinical Features, Classifications and Diagnosis of Circadian Rhythm Sleep Disorders

Yun, Chang-Ho

doi:2005.2.1.21

J Korean Sleep Res Soc > Volume 2(1); 2005 > Article

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J Korean Sleep Res Soc. 2005;2(1):21-26. doi: https://doi.org/10.13078/jksrs.05004

일주기 리듬 수면 장애의 임상적 특성, 분류 및 진단

윤창호

인하대학교 신경과

Clinical Features, Classifications and Diagnosis of Circadian Rhythm Sleep Disorders

Chang-Ho Yun

Department of Neurology, College of Medicine, Inha University

Corresponding Author: Chang-Ho Yun ,Tel: +82-32-890-3418, Fax: +82-32-890-3864, Email: ych333@inha.ac.kr

Received: June 1, 2005 Accepted: June 13, 2005 Published online: June 30, 2005

ABSTRACT

Circadian rhythm sleep disorders (CRSD) results from the abnormal relationship of the timing of sleep and wake to either the internal 24-hour circadian clock or the external clock time. That is, sleep-and-wake cycle is out of phase with the internal or external environment. As a result, patients suffer from insomnia or excessive daytime sleepiness. CRSD can be classified according to the type of desynchronization, such as internal or external desynchornization. In this article, clinical pictures, epidemiologic findings, pathophysiologies and diagnostic criteria of various CRSD are summarized.

Keywords: Circadian | Sleep | Disorders