the clinical features of the refractory group were the onset of epilepsy during the first year of life , absence of family history , retarded development before the onset , phakomatoses , daily or weekly seizures , secondarily generalized epilepsy , and marked eeg abnormalities at the initial visit , a change of types in epilepsy , no improvement in eeg findings , mental deterioration or severe retardation during the follow-up .
C0036572
seizures
C0014544
epilepsy