Signs and symptoms of narcolepsy include excessive daytime sleepiness, loss of muscle tone, abnormalities in perception (referred to as hypnagogic hallucinations), and sleep paralysis (an inability to move or talk). Other associated symptoms can include disturbed sleep at night, blurred vision, frequent awakening at night, carrying out actions without conscious awareness (automatic behavior) when transitioning from wakefulness to sleep.
Causes of narcolepsy
While the cause of narcolepsy is not fully understood, abnormalities in the structure and function of a group of nerve cells in the brain known as hypocretin neurons seem to play a role in its development.
Other narcolepsy symptoms and signs
- Abnormalities in Perception (Hypnagogic Hallucinations)
- Blurred Vision
- Disturbed Sleep at Night
- Excessive Daytime Sleepiness
- Frequent Night Awakenings
- Loss of Muscle Tone
- Sleep Paralysis
Main Article on Narcolepsy Symptoms and Signs
Pictures, Images, Illustrations & Quizzes
20 Tips to Beat Insomnia and Sleep Better
Good sleep hygiene leads to better sleep. Avoid insomnia and sleep better by minimizing stress, exercising, and taking proper...
Sleep Disorders: Foods That Help Sleep or Keep You Awake
Need more shut-eye? Your late-night cravings could be keeping you from a good night’s sleep. Should you drink green tea before...
Sleep Disorders: Insomnia, Sleep Apnea, and More
Learn about the different types of sleep disorders such as insomnia and sleep apnea. Explore the symptoms, causes, tests and...
Sleep Quiz: Sleep Hygiene & Sleep Facts
Take our Sleeping Quiz to learn which sleep disorders, causes, and symptoms rule the night. Trouble falling or staying asleep?...
Sleepless? Know the Signs of Sleep Deprivation
Think you may have sleep deprivation? Whether short term or long term, sleep deprivation can cause trouble. From weight gain to...