We report two patients with temporal lobe epilepsy who developed prolonged episodes of postictal psychosis (12 weeks) following a bout of seizures and a lucid interval. No drug toxicity was noted, and no recurrent or continuous seizures were observed during their prolonged psychotic episodes. Repeated EEGs during the period of psychosis showed that their habitual focal epileptiform abnormalities had disappeared. Responses to neuroleptic treatments were not remarkable. Their psychotic symptoms gradually dispelled after their epileptiform abnormalities reappeared. These observations may suggest possible overlapping mechanisms between a prolongation of psychosis and suppression of epileptiform discharges on a scalp EEG.
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