Summary: While the initial evolution of meningococcal meningitis (MM) is well described, there are few data on the long-term evolution, beyond 1 year.The objective of this research is to evaluate the sequelae of MM beyond 1 year in patients with a history of MM followed in Paris area, France. Most children with MM in France have been included in the MM register and are still being followed. Parents will be...

Summary: The study aims to explore the therapeutic value and mechanism of Interleukin-2 on children with Henoch-schönlein purpura.

Summary: IgA vasculitis is relatively common in children,especially in Asian countries. Abdominal manifestation could be severe, including bleeding, pancreatitis,appendicitis and intestinal intussusception. Delayed diagnosis could be fatal and cause severe complications.Nowadays no guidelines for those with severe abdominal manifestations in China.However, the most used treatment is steroid. For those seve...

Summary: Multi-center sequential multiple assignment randomized trial comparing the effectiveness of three different standard of care treatment options for patients with isolated skin vasculitis.

Summary: This study is performed to evaluate the efficacy and safety of various measures in the treatment of severe HSP in children.

Summary: This study is performed to evaluate the efficacy and safety of various measures in the treatment of HSPN in children.

Summary: This study is performed to evaluate the efficacy and safety of various measures in the treatment of HSPN with mild proteinuria in children.