title: 22-year-old man with abdominal pain and rash.
authors.affiliation: Mayo Graduate School of Medicine, Mayo Clinic Rochester, Minnesota 55905, USA.
authors.forename: Y C
authors.initials: YC
authors.lastname: Kudva
authors.forename: T G
authors.initials: TG
authors.lastname: Mason
mesh_terms: D015746:Abdominal Pain / Q000209:etiology*; D000328:Adult; D003113:Colonoscopy; D003937:Diagnosis, Differential; D004890:Erythema / Q000209:etiology*; D006801:Humans; D011695:IgA Vasculitis / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D008297:Male; D011379:Prognosis