Atypical purpura and other features associated with unfavorable outcomes of IgA vasculitis (Henoch-Schönlein purpura) in children: A retrospective study.

The prognosis of IgA vasculitis (also known as Henoch-Schönlein purpura) is determined by renal or other organ involvement. We conducted a retrospective study to identify the initial features of 106 children with IgA vasculitis and their association with unfavorable outcomes. Location of purpura above the waist and an altered urinalysis at diagnosis predicted a more aggressive course of disease.