Dravet Syndrome is a rare genetic epileptic encephalopathy (dysfunction of the brain). It begins in the first year of life in an otherwise healthy infant. Prior to 1989, this syndrome was known as epilepsy with polymorphic seizures, polymorphic epilepsy in infancy (PMEI) or severe myoclonic epilepsy in infancy (SMEI). The disease begins in infancy but is lifelong.
