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Narcolepsy - Overview

Alternative Names

Daytime sleep disorder; Cataplexy

Definition of Narcolepsy:

Narcolepsy is a sleep disorder that causes excessive sleepiness and frequent daytime sleep attacks.

Causes, incidence, and risk factors:

Narcolepsy is a nervous system disorder, not a mental illness. Anxiety does not cause narcolepsy.

Experts believe that narcolepsy is caused by reduced amounts of a protein called hypocretin, which is made in the brain. What causes the brain to produce less of this protein is unclear.

Narcolepsy tends to run in families.

Conditions that cause insomnia, such as disrupted work schedules, can make narcolepsy worse.

  • Reviewed last on: 9/2/2009
  • Luc Jasmin, MD, PhD, Departments of Anatomy Neurological Surgery, University of California, San Francisco, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

Dauvilliers Y, Arnulf I, Mignot E. Narcolepsy with cataplexy. Lancet. 2007;369(9560):499-511.

Morgenthaler TI, Kapur VK, Brown T, Swick TJ, Alessi C, Aurora RN, et al. Practice parameters for the treatment of narcolepsy and other hypersomnias of central origin. Sleep. 2007;30(12):1705-1711.

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