Narcolepsy presents with excessive drowsiness during the day with a tendency to sleep at inappropriate times.

A cure for narcolepsy has not yet been found, but most people with this disorder can lead nearly normal lives if the condition is properly treated.

Symptoms include:

• Excessive Daytime Sleepiness (EDS):   People with narcolepsy may become drowsy or feel foggy at very unusual times.
  

• Cataplexy:  These are attacks of sudden and brief loss of muscle tone usually triggered by strong emotion, such as laughter, anger or surprise.
  

• Sleep Paralysis:  A feeling of being paralyzed that occurs when a person is falling asleep or waking up..
  

• Hypnagogic Hallucinations:  Vivid dreamlike experiences when a person  is falling asleep.
  

• Automatic Behaviors:  These are routine tasks performed by a person not consciously. 
  

• Disturbed Nighttime Sleep:  A person who has trouble staying awake during the day may also have trouble staying asleep at night. Paradoxically, these people who are sleepy during the day may also have difficulty sleeping at night.