Medical Definition of Kleine-Levin syndrome

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Kleine-Levin syndrome: A rare condition that is characterized by periods of excessive drowsiness and sleep, lasting up to 20 hours per day. Affected individuals usually have excessive food intake and may be confused, irritable, and lethargic. Some patients have hallucinations or sexual disinhibition. Most patients with Kleine-Levin syndrome are adolescent males. The cause is unknown. Most cases resolve over time without treatment. Also known as Kleine-Levin hibernation syndrome.

Reviewed on 12/27/2018

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