Résumé
Kleine-levin syndrome is a rare disorder with symptoms that include periodic, sudden-onset episodes of hypersomnia, cognitive and behavioral disturbances [96%], changes and eating disturbances [80%], hypersexuality [43%]. This syndrome happened mostly in men [68%] and occurred sporadically worldwide. The median age of onset is adolescent. It was precipitated most frequently by infections [38.2%]. The prognosis is generally benign, with almost complete remission with normal cognitive and social functions after the episodes. The aim of this case report is to present a typical case of Kleine-Levin, and to illustrate problems in differential diagnosis, history, course, and therapeutic, neuropsychological sequela after the episode of the illness. Further research in the natural history of Klein-Levin syndrome is needed. Lithium and carbamazepine or other antiepileptics had a higher reported response rate [41%] for stopping relapses. It is important that the diagnosis is suspected early, especially in adolescent males who present with recurrent episodes of somnolence, increased appetite, and abnormal behavior