“Sleeping beauty syndrome”: two cases of Kleine-Levin syndrome

Two cases of Kleine-Levin syndrome (KLS), manifested in fifth and first decade of life respectively, are presented. The first case presented with episodic pattern of hyper somnolence and mood changes whereas the second case presented with hyper somnolence, behavioural and cognitive symptoms. Both of them had responded well with adequate trial of lithium. In both the cases, onset is in the extremes of their ages, which is rarely found.