What is Narcolepsy?

www.thoracic.org C LI P A N D C O P Y Sometimes a person with narcolepsy can also have problems with sudden muscle weakness known as cataplexy. Cataplexy can cause weakness of one area of your body such as an arm or a leg, slurred speech, or the complete inability to move. These abrupt episodes of weakness are often triggered by strong emotions such as surprise, laughter, happiness, fear, or anger.