Narcolepsy affects men and women. Symptoms usually begin during the teen or young adult years. The disorder also can develop later in life or in children, but it's rare before age 5.
Researchers think that certain factors may work together to cause narcolepsy. If these factors affect you, you may be at higher risk for the disorder. (For more information, go to "What Causes Narcolepsy?")
Dr. Emmanuel Mignot talks about advances in narcolepsy research and care
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