Dyssomnias are a broad classification of sleeping disorder that make it difficult to get to sleep, or to stay sleeping.

Major types of dyssomnias

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There are over 30 recognized kinds of dyssomnias. Major groups of dyssomnias include:

• Intrinsic sleep disorders - 12 disorders recognized, including
  • hypersomnia,
  • narcolepsy,
  • periodic limb movement disorder,
  • restless legs syndrome,
  • sleep apnea.
• Extrinsic sleep disorders - 13 disorders recognized, including
  • alcohol-dependent sleep disorder,
  • food allergy insomnia,
  • inadequate sleep routine.
• Circadian rhythm disorders - 6 disorders recognized, including
  • advanced sleep phase syndrome,
  • delayed sleep phase syndrome,
  • jetlag,
  • shift work sleep disorder.

See also

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• Somnolence

External link

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• http://www.mysleepcenter.com/Dyssomnias.html - Complete listing of the group of dysomnias and orders within each group.

Sleep disorders