(len'ŏks-gas-tō' )

[Henri Gastaut, Fr. neuroscientist, 1915–1995; William Gordon Lennox, U.S. neurologist, 1884–1960]

A form of early childhood epilepsy marked by atypical absence and tonic-clonic seizures, slow-spike electroencephalographic waves, and a high incidence of mental retardation.