title: The Kleine-Levine syndrome--a variant?
abstract: A case of Kleine-Levin syndrome in an older man is described, with a review of the literature. An important point is emphasized in our case in which the patient reacted unfavorably to Ritalin, becoming sexually aroused, although his hypersomnia improved. A possibly different mechanism in hypersomnia and hypersexuality is speculated.
mesh_terms: D000328:Adult; D006970:Disorders of Excessive Somnolence / Q000175:diagnosis* / Q000188:drug therapy / Q000209:etiology; D001068:Feeding and Eating Disorders / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D007031:Hypothalamus / Q000503:physiopathology; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis* / Q000209:etiology; D008774:Methylphenidate / Q000009:adverse effects / Q000627:therapeutic use; D010262:Paraphilic Disorders / Q000175:diagnosis / Q000209:etiology; D011602:Psychophysiologic Disorders; D012893:Sleep Wake Disorders / Q000175:diagnosis*; D013577:Syndrome
chemical_list: D008774:Methylphenidate