The cause of narcolepsy with and without cataplexy Obesity – Many patients with narcolepsy also gain weight as the result of inactivity and sleepiness. Nighttime eating and excessive dreaming with motor activity (acting out dreams, see also REM sleep Behavior Disorder) also frequently occur.
Patients often do fall asleep rapidly but are unable to stay asleep for more than a few hours at a time. Hypnagogic hallucinations – vivid, sometimes disturbing dreamlike experiences that occur while dozing, falling asleep and/or upon awakening.Īutomatic behavior – a person continues to function or talk while being half asleep, and awakens with no memory of doing these activities.ĭifficulties maintaining sleep – Nighttime sleep is disturbed. Sleep paralysis - the temporary inability to talk or move when waking it may last a few seconds to minutes. Cataplexy is a cardinal symptom as it almost always indicates that the cause of the narcolepsy is a lack of hypocretin in the brain. While cataplexy can manifest as something as minor as a slight slackening of the facial muscles, in extreme cases, a person may experience total collapse or even muscle paralysis. Beside excessive daytime sleepiness, patients may display the following symptoms:Ĭataplexy – a sudden weakening of the muscles, often triggered by a strong emotion.
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