It can last for seconds to minutes and may affect your whole body or a localized area, such as your head and neck. CataplexyĬataplexy is a sudden loss of muscle tone that occurs during waking hours. This symptom doesn’t usually occur in type 2 narcolepsy. insomnia (difficulty falling or staying asleep at night)Ĭataplexy is one of the key characteristics of type 1 narcolepsy.hallucinations (vivid images or other sensory experiences) that may occur when falling asleep or waking up.sleep paralysis (a temporary inability to speak or move when falling asleep or waking up).With type 1 narcolepsy, you may experience symptoms such as: ![]() Type 1 narcolepsy is typically more severe than type 2. It results from a brain injury, specifically to the hypothalamus region, which regulates sleep cycles. In very rare cases, it’s possible to develop a condition known as secondary narcolepsy. The symptoms of type 2 narcolepsy are typically less severe than those of type 1. Type 2 used to be called “narcolepsy without cataplexy.” If you have type 2 narcolepsy, you may have symptoms of narcolepsy without cataplexy, and you may have a normal hypocretin level. With type 1 narcolepsy, you may also have a low level of hypocretin, a brain hormone that regulates your sleep-wake cycles.Īdditionally, in type 1 narcolepsy, you may experience the vivid dream activity and muscle weakness that typically occur with REM sleep while you’re awake, and you may not experience these things while asleep. ![]() But if you have narcolepsy, you may enter REM sleep within 15 minutes of falling asleep. People without narcolepsy typically enter rapid eye movement (REM) sleep after 60–90 minutes of sleep.
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