Irregular sleep-wake syndrome

Definition

Irregular sleep-wake syndrome involves different and disorganized periods of sleeping and wakeful behavior.

Alternative Names

Causes

Some people have an irregular sleep-wake pattern because of a problem with brain function, the body's circadian pacemaker (internal clock), or other reasons. 

In other people, such as shift workers and travelers who change time zones frequently, outside factors cause this syndrome.

Exams and Tests

Individuals with irregular sleep-wake syndrome may complain of either insomnia or excessive sleepiness. Patients usually have an irregular pattern of at least three sleep episodes during a 24-hour period.

The total amount of time a person with this condition sleeps is considered normal for their age. No medical or mental disorder causes the symptoms, and no other sleep disorder is generally present.

When to Contact a Medical Professional

Most people may occasionally have disturbances in their sleep. However, if this type of irregular sleep-wake pattern occurs regularly and without cause, you may consider consulting your health care provider.

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