obsolete_Landau-Kleffner syndrome true A syndrome characterized by the onset of isolated language dysfunction in otherwise normal children (age of onset 4-7 years) and epileptiform discharges on ELECTROENCEPHALOGRAPHY. Seizures, including atypical absence (EPILEPSY, ABSENCE), complex partial (EPILEPSY, COMPLEX PARTIAL), and other types may occur. The electroencephalographic abnormalities and seizures tend to resolve by puberty. The language disorder may also resolve although some individuals are left with severe language dysfunction, including APHASIA and auditory AGNOSIA. (From Menkes, Textbook of Child Neurology, 5th ed, pp749-50; J Child Neurol 1997 Nov;12(8):489-495) MedDRA:10052083 DOID:2538 acquired epileptic aphasia MESH:D018887 Sirarat Sarntivijai Replaced by Mondo term MONDO_0009509, with which this term was previously merged. Use: http://purl.obolibrary.org/obo/MONDO_0009509 Landau-Kleffner Syndrome 3.88.0 NCIt:C84806 http://purl.obolibrary.org/obo/MONDO_0009509