• Reviewed on 12/12
    By Dr. Harrington

Circadian Rhythm Sleep Disorders: Overview

Circadian rhythm sleep disorders are disorders of the timing of sleep and wakefulness. We all have an internal "clock." This "clock" controls our rhythm of sleeping and wakefulness.

There are times of the day when we are most alert. This is often mid-morning and early evening. And, there are times when we are more likely to be sleepy - during early to mid-afternoon and late evening.

A person's environment impacts the timing of sleep and wakefulness, and may either complement or disrupt our internal clock.


Associated Conditions

Excessive sleepiness can develop when our sleep rhythm is altered. We may want to sleep during times when we need to remain awake. On the other hand, insomnia occurs when we attempt to sleep at a time when our rhythm is to stay awake.


More Circadian Rhythm Sleep Disorders Information
Bookmark and Share

Sleep Center

The Sleep Center at National Jewish Health is the oldest and most comprehensive sleep medicine program in the Denver region.

Learn more.

Sign Up for e-Newsletters

Enter your email address to receive health tips, recent research findings and news about National Jewish Health.