Narcolepsy- A disabling neurological disorder of sleep regulation that affects the control of sleep and wakefulness. It may be described as an intrusion of the dreaming state of sleep REM into the waking state.
-Symptoms generally begin between the ages of 15 and 30.
-Symptoms of the disorder: excessive daytime sleepiness; cataplexy (brief episodes of muscle weakness brought on by strong emotions) sleep paralysis (paralysis upon falling asleep or waking up) and hypnagogic hallucinations (vivid dream-like images that occur at sleep onset).
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