An autosomal dominant form of early infantile epileptic encephalopathy, caused by mutation(s) in the scn1a gene, encoding sodium channel protein type 1 subunit alpha.

Dravet syndrome (DS), previously known as severe myoclonic epilepsy of infancy (SMEI), is an autosomal dominant genetic disorder which causes a catastrophic form of epilepsy, with prolonged seizures that are often triggered by hot temperatures or fever. It is very difficult to treat with anticonvulsant medications...