Narcolepsy type 2 (NT2), on the other hand, does not involve cataplexy. “Narcolepsy type 2 is very similar in some ways to NT1, but we do not understand the neurobiology of it,” Dr. Foldvary ...

A hormone produced by the brain, orexin, may play a central role in the functioning of the brain’s glymphatic system, which clears waste, according to a new study from the University of Oulu.

Narcolepsy and Hypersomnia May Have Different Causes Experts are still learning the causes of both sleep disorders. They do know that people with type 1 narcolepsy (narcolepsy with cataplexy) have ...