NCIt definition : A syndrome characterized by frequent episodes of epilepsy during childhood. The epileptic
episodes may be tonic, atonic, myoclonic, or absence seizures. It may be accompanied
by mental retardation and behavioral problems.;
Alternative definition : NICHD: A severe form of childhood epilepsy that is characterized by frequent seizures
of multiple types, a distinct electroencephalogram pattern consisting of slow spike-waves
between seizures, behavioral disturbances, and cognitive dysfunction.;