title: Five-year-old boy presenting with severe back pain, swelling, and refusal to walk.
authors: 1Nemours/A.I. DuPont Hospital for Children, Wilmington, DE, USA.
authors: Beverly
authors: B
authors: Schaefer
authors: Catherine
authors: C
authors: Soprano
mesh_terms: D001416:Back Pain / Q000209:etiology*; D002675:Child, Preschool; D004487:Edema / Q000209:etiology*; D006801:Humans; D011695:IgA Vasculitis / Q000150:complications / Q000175:diagnosis*; D008297:Male; D012871:Skin Diseases / Q000209:etiology*; D016138:Walking