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Chapter 17 - Sleepiness in advanced and delayed sleep phase disorders

from Section 2 - Sleep Disorders and Excessive Sleepiness

Published online by Cambridge University Press:  04 February 2011

By
Scott S. Campbell  and
Patricia J. Murphy
Edited by
Michael J. Thorpy  and
Michel Billiard
Michael J. Thorpy
Affiliation:
Sleep-Wake Disorders Center, Montefiore Medical Center, Bronx, NY, USA
Michel Billiard
Affiliation:
Guide Chauliac Hospital, Montpellier, France
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Summary

This chapter discusses the symptom of sleepiness in two of the most common circadian rhythm sleep disorders: advanced sleep phase disorder (ASPD) and delayed sleep phase disorder (DSPD). The personality disorders are diagnosed more frequently in those with DSPD compared with other sleep disorder populations, including ASPD. In ASPD, an individual's circadian sleep tendency is advanced relative to the (societally) desired clock time. A number of investigators have recently reported age-related changes in the circadian timing system that may be associated with the sleep patterns often observed in older subjects. The effective use of current interventions in the treatment of DSPD and ASPD, as well as the development of new approaches, depends largely on the findings obtained from this type of analytic approach. This is emphasized by the results of several studies showing successful phase shifts of the circadian system, without any improvement in sleep quality.

Keywords

drowsinessdrowsy drivingemployer liabilityphysician liabilitymedico-legal consequencesinjuryexcessive sleepiness
Type
Chapter
Information
Sleepiness
Causes, Consequences and Treatment
 , pp. 176 - 185
Publisher: Cambridge University Press
Print publication year: 2011

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