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Published on: 6/26/2025

What are the symptoms of narcolepsy without cataplexy?

Narcolepsy without cataplexy mainly causes excessive daytime sleepiness. In addition, some people with narcolepsy may experience sleep paralysis, hallucinations, and/or disturbed nighttime sleep, but not everyone with narcolepsy experiences these particular symptoms.

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Explanation

Narcolepsy without cataplexy is a sleep disorder where people often feel very sleepy during the day. They might suddenly fall asleep, even when they are trying to stay awake. Some people with narcolepsy also have cataplexy (episodes of sudden muscle weakness triggered by strong emotions), while other people with narcolepsy do not have cataplexy.

The most common symptom of narcolepsy (with or without cataplexy) is excessive daytime sleepiness, which means feeling very tired during the day even after a full night's sleep. This symptom can make it hard to pay attention or stay awake, even during working, eating, or talking with someone.

Some (but not all) people with narcolepsy may also other symptoms, including but not limited to:

  1. Sleep Paralysis: This happens when a person wakes up but does not feel able to move for a short time. A sleep paralysis episode can feel scary but it usually improves quickly.

  2. Hallucinations: Some people with narcolepsy (with or without cataplexy) might see or hear things that are not there, especially when falling asleep or waking up.

  3. Disturbed Nighttime Sleep: Some people with narcolepsy might have wake up often or have difficulty falling back to sleep.

If you are wondering if you or someone you know might have this condition, it is important to talk to a healthcare professional. A healthcare provider can provide a personalized medical evaluation and recommendations for these symptoms. Also, more information about narcolepsy (with and without cataplexy) is available at https://sleepeducation.org/sleep-disorders/narcolepsy/.

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