Immunoglobulin A–Associated Vasculitis (Henoch-Schönlein Purpura) (Legs)
Immunoglobulin A–Associated Vasculitis (Henoch-Schönlein Purpura) (Legs)
Immunoglobulin A–Associated Vasculitis (Henoch-Schönlein Purpura) (Legs)

    This photo shows a rash of reddish purple bumps on the legs of a child who has immunoglobulin A–associated vasculitis.

DR P. MARAZZI/SCIENCE PHOTO LIBRARY