[Epilepsy-acquired aphasia syndrome with psychosis. Report of a case ].

We report the case of a boy whose development was normal until the age of three when regression with loss of speech occurred. Other anomalies included eating and sleep disorders, sterotyped behavior disorders, suggesting infantile psychosis. The electroencephalogram evidenced paroxysmal anomalies, particularly during sleep, with no clinical seizures. The diagnosis of epilepsia-acquired aphasia syndrome (Landau-Kleffner syndrome) was made. The psychotic disorders were not considered as a differential diagnosis but rather as intertwined with the elements of the syndrome. The relationship between acquired aphasia and psychosis are discussed.