Kleine-Levin Syndrome (KLS) is a syndrome that involves recurrent hypersomnia.


Clinical features of Kleine-Levin Syndrome (KLS):

(1) recurrent episodes of hypersomnia

(2) compulsive eating (megaphagia) with some of the episodes

(3) variable behavioral abnormalities


Behavioral abnormalities may include:

(1) sexual disinhibition

(2) "odd" behavior

(3) cognitive abnormalities including confusion

(4) delusions or hallucinations

(5) anxiety and/or depression


The occurrence of recurrent hypersomnia and other features of KLS without excessive eating is referred to as Klein-Levin Syndrome without compulsive eating (KLS WOCE) and is considered a separate disorder.


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