RT Journal Article SR Electronic T1 Acute abdominal pain: Henoch–Schönlein purpura case in a young adult, a rare but important diagnosis JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 77 OP 79 DO 10.7861/clinmedicine.19-1-77 VO 19 IS 1 A1 Keith McPartland A1 Gary Wright YR 2019 UL http://www.rcpjournals.org/content/19/1/77.abstract AB Henoch–Schönlein purpura (HSP), also known as IgA vasculitis, is a systemic vasculitis which is the most common vasculitis in children. The incidence in adults varies from 3.4 to 14.3 cases per million.1 The classic triad of symptoms include purpuric rash, arthritis and abdominal pain. We present the case of a 20-year-old male with HSP who presented with recurrent episodes of abdominal pain, followed by classical symptoms with an identified post-infectious aetiology.