Aphasia in children is generally still little explored because it is rare. Landau-Kleffner syndrome (LKS) is rare and causes specific difficulties in children with it. Among the neuropsychological difficulties (cognitive and attentional), we find a significant initially receptive aphasia. We report in this work the observation of a 13-year-old child seen in consultation for aphasia at the age of 07 years post epileptic seizure. In this patient the diagnosis of LKS was retained after the etiological assessment and the complementary examinations carried out.