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Henoch-Schönlein purpura (HSP), first recognised by Heberden in 1801, is a systemic, IgA mediated vasculitis of small vessels that is usually self-limiting but may progress to gastrointestinal bleeding, intussusception, and nephropathy. A third of patients will experience recurrences.1 Currently treatment is confined to rest, analgesia, and steroids for refractory abdominal pain,2 and immunosuppressants for complications, especially renal disease. Original reports, predominantly in adults, show that the symptoms of purpuric rash, abdominal pain, and arthritis in HSP respond to treatment with dapsone.3–, …
Competing interests: none declared