Sexual automatisms in complex partial seizures.

Ictal sexual automatisms such as masturbatory activity, pelvic thrusting, or similar automatisms for which the patient is amnesic have been attributed to temporal lobe disease. Of 61 patients with medically refractory complex partial seizures, 14 had frontal lobe seizure foci. Four of these patients manifested sexual automatisms in some or all of their seizures. Frontal lobe seizure origin was documented by depth EEG in three patients. In the fourth, a calcified lesion was demonstrated radiologically. In three patients, frontal lobectomy revealed abnormal frontal lobe pathology and was followed by 75 to 100% reduction in seizure frequency. Sexual automatisms did not occur in patients with seizures originating in any area other than the frontal lobe.