The main objective of this study is to describe the management of children with rheumatoid purpura from admission to the pediatric emergency room to follow-up by primary care physicians after hospital discharge.

Secondary objectives The secondary objective is to assess general practitioners current knowledge and practice of the condition and potential barriers to monitoring and follow-up by general practitioners.

Conduct of research Children diagnosed with rheumatoid purpura within the past 2 years at the 3 participating sites will be included in the study if parental authority holders do not object.

Patients will be identified through the Medical Information Department of each hospital.

Parents will be contacted - first by mail, then by phone - to request permission to collect the child's medical data from medical records, and to retrieve information on the surveillance and follow-up of the disease by general practitioners up to two years after diagnosis.

Inclusion Criteria:

• Underaged patient diagnosed with rheumatoid purpura during a visit to the pediatric emergencies of Mulhouse, Colmar and Strasbourg
• No objection to the study from the two holders of parental authority

Exclusion Criteria:

- Patient followed in the context of a genetic or malformative pathology, an immune deficiency, or a cancer

Patients will be identified by the Medical Information Department of each site. The study will be conducted on patients who have been managed for rheumatoid purpura within the last two years at one of the three participating centers.