Efficacy of Cannabidiol in the Management of Self-injuries in Children and Adolescents With Severe Neurodevelopmental Disorders.

Exclusion criteria

• \- 1. Underweight corresponding to a body mass index below the IOTF 18.5 curve on the International Obesity Task Force's body mass index curves for girls and boys 2. Hypersensitivity to the active substance (cannabidiol) or to any of the excipients (refined sesame oil, anhydrous ethanol, sucralose, strawberry flavor, benzyl alcohol); 3. Treatment with or consumption of cannabidiol in the 12 weeks prior to inclusion; 4. Consumption of cannabis in the 12 weeks prior to inclusion; 5. Usual treatment (excluding treatment of self-injuries) containing molecules interacting with cannabidiol (rifampicin, carbamazepine, enzalutamide, mitotane, St. John's wort, clobazam, valproate, stiripentol, phenytoin, lamotrigine, everolimus, theophylline, tizanidine, bupropion, efavirenz, diflunisal, propofol, fenofibrate, gemfibrozil, morphine, lorazepam, repaglinide, warfarin, sirolimus, tacrolimus, digoxin); 6. Elevated transaminases \> 3N or total bilirubin \> 2N; 7. Known current heart failure; 8. Known current terminal renal failure (GFR \< 15 ml/min/1.73 m2); 9. Known current moderate or severe hepatic insufficiency (Child-Pugh B or C); 10. Known current epilepsy or history of epilepsy, even stabilized, requiring treatment currently or not, whatever the type; 11. Pregnancy or breastfeeding; 12. Inability of the patient or entourage to comply with the study protocol; 13. Patient currently participating in another interventional research (category 1 or 2), clinical trial or clinical investigation, or who are in the exclusion period following him/her participation in another study of this type, as defined in the protocol of that study. 14\. Participant related to a person involved in the study at the investigational site