[Vasculitis in children].

Vasculitis is an inflammatory involvement with or without necrosis of blood vessels and the predominant feature of a large number of different diseases and syndromes in childhood. Vasculitis could be a primitive disease or it could participate with minor or mayor gravity to other diseases. Symptoms and prognosis vary accordingly to the size of vessels, type of inflammatory exudate and the organs involved. In pediatric age most frequent vasculitis are Schönlein-Henoch syndrome, Kawasaki syndrome and vasculitis associated with connective tissue diseases.