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Immunoglobulin A–Associated Vasculitis (Henoch-Schönlein Purpura)

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

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