Abstract
Patients (74) with temporal lobe epilepsy, resistant to medication, underwent unilateral temporal lobe resection. In only 12 patients was no etiological factor found. In 3/4 of the patients a peri- or postnatal injury was the suspected etiology of the epilepsy; in 1/3 a history of complications in the actual and/or abnormal outcome of a previous pregnancy was recorded. Only 7 patients had experienced febrile convulsions. Patients with certain combinations of etiological factors, including encephalitis, had a poor prognosis regarding relief from seizures. Patients in whom an abnormal outcome of the mother''s previous pregnancies is recorded had a poor prognosis as regards psychiatric normalization. Apart from this no correlation was found between the surgical results and the numbers or types of the various etiological factors.