[Landau-Kleffner syndrome].

The Landau-Kleffner syndrome is characterized by the combination of acquired aphasia and epilepsy. Disturbances appear at an age between 2 and 7 years. The prognosis of epilepsy is favourable, but the outcome of aphasia is different. A 15-year old boy is described as one who is totally unable to communicate through speech even 11 years after onset of aphasia. Diagnostics, aetiology, pathophysiology and new therapeutic possibilities of the syndrome are discussed.