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Insomnia, RLS, Narcolepsy and OSA

Sleep disorders include not only insomnia but other potentially serious conditions, such as narcolepsy, restless legs syndrome (RLS), and obstructive sleep apnea (OSA) syndrome. As with insomnia, scientific and clinical research into these conditions is advancing rapidly, as indicated by studies presented at the 2004 Annual Meeting of the Associated Professional Sleep Societies.

Narcolepsy is a lifelong condition with a peak onset in the second decade of life. Hallmark symptoms of narcolepsy include persistent daytime sleepiness; cataplexy, an abrupt paralysis or paresis of skeletal muscles that usually follows emotional experiences, such as anger, surprise, laughter, or physical exercise; hypnagogic hallucinations; vivid and often frightening dreams that occur shortly after falling asleep; and sleep paralysis, a transient global paralysis of voluntary muscles that also usually occurs shortly after falling asleep and lasts a few seconds to minutes.

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