Juvenile idiopathic arthritis is a chronic disease affecting less than 0.01% of the population and requires a heavy treatment. Implications are numerous and particularly strong for children, who must understand the disease, accept it and adapt their lifestyle. Which role do children play in treatment compliance? What are the conditions that will make children observe their treatment correctly and those that will create resistance? This report conducted and built with doctors and healthcare professionals provides insights into the active role of the child in treatment success.