Most common vasculitis of childhood.
Rash of palpable purpura is present in all cases.
Most cases resolve with symptomatic treatment.
Complications can occur, with renal failure being the most common cause of death.
Henoch-Schonlein purpura (HSP) is the most common vasculitis of childhood and affects the small vessels. HSP is characterised by the classic tetrad of rash, abdominal pain, arthritis/arthralgia, and glomerulonephritis. 
Assistant Professor of Family Medicine
PFR is an author of a number of references cited in this monograph.
Department of Family Medicine
RJP declares that he has no competing interests.
Consultant Physician and Rheumatologist
Centre for Rheumatic Diseases
Glasgow Royal Infirmary
RM declares that he has no competing interests.
Ipswich Hospital NHS Trust
RAW declares that he has no competing interests.
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