MedGen

The Kleine-Levin hibernation syndrome, a rare disorder that occurs predominantly in males, is characterized by episodic attacks of aberrant behavior, hypersomnia, and increased feeding (megaphagia) and sex drives (Kleine, 1925; Levin, 1929). [from OMIM]

Recurrent episodes of severe hypersomnia are accompanied by cognitive and behavioral disturbances, including confusion, derealization, apathy, compulsive eating, and hypersexuality. [from HPO]