Circadian Rhythm Disorders

Circadian Rhythm Sleep Disorders are a group of sleep disorders that affect the timing of sleep, characterised by an inability to sleep and/or wake at normal or appropriate times due to the dictates of the individual’s biological or circadian clock.

People with circadian rhythm sleep disorders are therefore unable to sleep and wake at the times required for normal work, school, and social needs, which can severely impact their quality of life.

Circadian Rhythm Sleep Disorders include:

Advanced Sleep Phase Syndrome
Delayed Sleep Phase Syndrome
Irregular Sleep-Wake Pattern
Non-24-hour Sleep-Wake Disorder

Where can you find out more about Circadian Rhythm Sleep Disorders?
Circadian Rhythm Sleep Disorders Network

Our Fact Sheet on Delayed Sleep Phase Disorder may contain useful information.