Seizure recurrence in temporal lobe epilepsy.

We report on a patient with clinical, electroencephalographic and radiological features of temporal lobe epilepsy, whose seizures were initially controlled with antiepileptic treatment. Five years after the onset of seizures, he developed more frequent and prolonged episodes of confusion, which were misinterpreted as secondary to temporal lobe epilepsy. Further investigation revealed the presence of hypoglycaemia and the eventual diagnosis of metastatic insulinoma.