Irregular sleep-wake rhythm (MORE)

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INTRODUCTION:

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

CAUSES:

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

This disorder is very uncommon. It typically occurs in someone with a brain dysfunction who does not have a regular routine during the day. The amount of total sleep time is normal, but the body clock loses its normal circadian cycle.

Similar symptoms may be seen in people who have frequently changing work shifts and in travelers who often change time zones. These people have a different condition, such as shift work sleep disorder or jet lag syndrome.

TESTS:

People with irregular sleep-wake syndrome may have insomnia, excessive sleepiness, or both. Patients usually have at least three abnormal sleep episodes during a 24-hour period, but their total amount of sleep time is normal for their age.

If the diagnosis is not clear, your health care provider may prescribe a device called an "actigraph" for you to wear. This looks like a wristwatch, and can tell when you are sleeping or awake.

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

This disorder is very uncommon. It typically occurs in someone with a brain dysfunction who does not have a regular routine during the day. The amount of total sleep time is normal, but the body clock loses its normal circadian cycle.

Similar symptoms may be seen in people who have frequently changing work shifts and in travelers who often change time zones. These people have a different condition, such as shift work sleep disorder or jet lag syndrome