Chemotherapy may be responsible for central and/or peripheral neurotoxicity. These neurological complications are frequent but little known. Some molecules are more providers, responsible for acute or late complications, sometimes not reversible. Some manifestations such as acute encephalopathy and acute reversible encephalopathy are increasingly understood. We report here a case of acute ifosfamide-induced encephalopathy (EII) with brain damage resolved after discontinuation of this treatment in a 13-years-old child.