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Lennox-Gastaut syndrome Len·nox-Gas·taut syndrome (lěn'əks-gā-stō', -gä-)
A generalized myoclonic astatic epilepsy that occurs in children as a result of various cerebral afflictions such as perinatal hypoxia, cerebral hemorrhage, encephalitis, and maldevelopment or metabolic disorders of the brain; it is characterized by mental retardation and generalized tonic seizures or akinetic attacks. Also called Lennox syndrome.