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Irregular sleep
Irregular sleep


Sleep patterns in the young and aged
Sleep patterns in the young and aged


Definition:

Sleep disorders involve any difficulties related to sleeping, including difficulty falling or staying asleep, falling asleep at inappropriate times, excessive total sleep time, or abnormal behaviors associated with sleep.



Causes, incidence, and risk factors:

More than 100 different disorders of sleeping and waking have been identified. They can be grouped in four main categories:

  • Problems with falling and staying asleep
  • Problems with staying awake
  • Problems with sticking to a regular sleep schedule
  • Sleep-disruptive behaviors

PROBLEMS WITH FALLING AND STAYING ASLEEP

Insomnia includes any combination of difficulty with falling asleep, staying asleep, intermittent wakefulness and early-morning awakening. Episodes may come and go (be transient), last as long as 2 to 3 weeks (be short-term), or be long-lasting (chronic).

Common factors associated with insomnia include:

  • Physical illness
  • Depression
  • Anxiety or stress
  • Poor sleeping environment such as excessive noise or light
  • Caffeine
  • Alcohol or other drugs
  • Use of certain medications
  • Heavy smoking
  • Physical discomfort
  • Daytime napping
  • Counterproductive sleep habits:
    • Early bedtimes
    • Excessive time spent awake in bed

Disorders include:

  • Psychophysiological insomnia (learned insomnia)
  • Delayed sleep phase syndrome -- where a patient's internal clock is constantly out of synch with the "accepted" day / night phases; for example, patients feel best if they can sleep from 4AM to noon
  • Hypnotic-dependent sleep disorder -- insomnia that occurs when you stop or become tolerant to certain types of sleep medications
  • Stimulant-dependent sleep disorder -- insomnia that occurs when you stop or become dependent on certain types of stimulants

PROBLEMS WITH STAYING AWAKE

Disorders of excessive sleepiness are called hypersomnias . These include:

PROBLEMS STICKING TO A REGULAR SLEEP SCHEDULE

Problems may also occur when you do not maintain a consistent sleep and wake schedule. This occurs when traveling between times zones and with shift workers on rotating schedules, particularly nighttime workers.

Sleep disruption disorders include:

  • Irregular sleep-wake syndrome
  • Jet lag syndrome
  • Natural short sleeper (the person sleeps less hours than normal but has no ill effects)
  • Paradoxical insomnia (the person actually sleeps a different amount than they think they do)
  • Shift work sleep disorder

SLEEP-DISRUPTIVE BEHAVIORS

Abnormal behaviors during sleep are called parasomnias and are fairly common in children. They include:



Symptoms:

The symptoms vary and depend on the specific sleep disorder.



Signs and tests:

Tests vary and depend on the specific sleep disorder. A sleep study (polysomnography ) may be done.



Treatment:

Treatments vary and depend on the specific sleep disorder.

See:



Support Groups:



Expectations (prognosis):

The outcome varies with the type of disorder. Some disorders may clear up on their own.



Calling your health care provider:

Call for an appointment with your health care provider if lack of sleep or too much sleep is interfering with daily living.

Also call if non-breathing spells are observed during sleep.



Prevention:

Maintaining regular sleep habits and a quiet sleep environment may prevent some sleep disorders.




Review Date: 9/11/2008
Reviewed By: Allen J. Blaivas, DO, Pulmonary, Critical Care, and Sleep Medicine, Department of Veteran Affairs, VA New Jersey Health Care System, East Orange, NJ . Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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