The Kleine-Levine syndrome--a variant?

  title={The Kleine-Levine syndrome--a variant?},
  author={Ramzy Yassa and Arun Kumar Narayanan Nair},
  journal={The Journal of clinical psychiatry},
  volume={39 3},
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.