A girl who had both sylvian and atonic seizures was presented. She was born uneventfully and had no family history of convulsive disorder. Her development was normal untill the age of 4 years and 5 months, when she began to have tonic seizures of the upper limb with hemifacial twitching. One year and 5 months later, frequent atonic seizures appeared. At 8 years and 7 months old, when she was referred to our unit, her psychomotor development was normal. The EEG showed generalized sharp and slow waves dominant in central and midtemporal area, which became continuous as she fell in sleep. At 9 years and 4 months, a month later after administration of CBZ, she experienced frequent atonic seizures. After these seizures, she had no attachs and the EEG became normal. Her EEG finding and clinical course seemed to resemble atypical benign partial epilepsy of childhood described by Aicardi et al.
