Narcolepsy is a chronic disorder affecting part of the brain where regulation of sleep and wakefulness take place. Narcolepsy can be thought of as an intrusion of dreaming sleep (REM) into the waking state.
- Excessive daytime sleepiness
- Sudden temporary decrease or loss of muscle tone, especially when emotional
- Some may experience vivid dream-like images when drifting off to sleep or waking up unable to move or talk for a brief period of time