Last Updated on Mar 11, 2020

Classification of Sleep Disorders

The American Academy of Sleep Medicine has identified and officially accepted 81 different sleep disorders of which a few common ones are discussed. Depending on the possible insults to sleep, some of the important and more common sleep disorders are as follows-

  • Insomnia
  • Obstructive sleep apnea syndrome
  • Narcolepsy
  • Restless legs syndrome
  • Periodic limb movement
  • Parasomnias
  • Hypersomnias
  • Circadian rhythm disorders


  1. Coren, Stanley. Sleep Thieves: An Eye-Opening Exploration into the Science and Mysteries of Sleep. New York: The Free Press; 1996, p. 287.
  2. Sleep Disorders - (


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Elderly66 Wednesday, April 17, 2013

I am 66 years old woman. Lately I am experiencing that in the middle of the night I am howling due to some terrible nightmare, generally I realise in sleep that I am howling, I get awakened, mostly am unable to recall the dream sequence, but a general feeling of dread is there. It is disturbing my family. I am on a drug [ pentoprazole] stomach disorder. Kindly help.

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