A Case of the Kleine-Levin Syndrome of Long Duration

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Abstract
There have been few cases of this syndrome published since the original papers by Kleine in 1925 and Levin in 1929. Critchley (1962) described 26 cases in his paper, in which he reviewed the condition fully. Earles (1965) mentioned 44 cases in the literature: a female case was recently discussed by Duffy and Davison (1968). According to Critchley the characteristic symptoms of this syndrome are ‘recurring episodes of undue sleepiness lasting some days, associated with an inordinate intake of food and often with abnormal behaviour’. Invariably male adolescents are affected; they are normal in between attacks and the condition tends to disappear in later life.