Evaluation of the Efficiency of Treatment by BUMETANIDE on Autistic Children With a Known Ethiology

Inclusion Criteria: * Children and teenager from age 5 to age 17, with a diagnosis of typical autism or Asperger syndrome according to the criteria of diagnosis of the WHO's classification (CIM-10), * With a known etiology, * Patients for whom the CARS results are strictly Superior or equal to 30, * Of whom the parents have given their free, informed and written consent, * Affiliated or beneficiary of the French social security. Exclusion Criteria: * Patients under treatment by inlet diuretic either at the time of the study or before, * Patients with electrolytic disorders, * Patients with a known hypersensitivity to sulfa drugs, * Patients with a hepatic or renal failure, * Patients with an epilepsy not controlled by a treatment (comitial crisis in the past 6 month at the time the trial starts despite a treatment), * Patients under treatment by psychotropic exception made of the melatonin, * Allergy to the bumetanide or one of its excipients, * Patient under a treatment by lithium, diphemanil, erythromycin IV, halofantrine, pentamidine, sultopride, vincamine, aminoglycoside, * Pregnant and lactating women. Secondary exclusion criteria: * QT prolongation noticed on the ECG at Day0, * Anomaly on the biological check up (Day 0) made before including the patient that would contraindicated the prescription of bumetanide, * Patients for whom the CARS results are strictly inferior to 30.