Kleine Levin Syndrome

Kleine-levin syndrome is characterized as a periodic hypersomnia crisis as well as changes in appetite and variable behavioural symptoms. The exact aetiology is unknown and it is diagnosed based on clinical manifestations.  This report describes the finding of a 15- year- old boy with KLS. He presented with hypersomnia, auditory hallucinations and persecutory delusions and all the episodes started with skin lesions over the leg. He had amnesia to his episodes. Kleine-levin syndrome should be considered in patients with periodic hypersomnia and skin lesions. The objective of this case report is that clinicians should have a high index of suspicion of Kleine Levin syndrome in case of periodic hypersomnia.