title: Leucocytoclastic vasculitis associated with Staphylococcus intermedius in the pastern of a horse.
abstract: A pregnant quarterhorse mare became acutely lame as a result of severe swelling of its right hind leg, thought to have been caused by a fracture or a muscle tear. Diagnostic procedures ruled out a traumatic musculoskeletal cause and a physical examination revealed chronic pastern dermatitis ('scratches'/'grease heel'). Histopathological evaluation of biopsy samples from the right hind leg was consistent with a leucocytoclastic vasculitis, and culture yielded Staphylococcus intermedius. The treatment and infectious causes of pastern dermatitis are discussed.
authors.affiliation: Department of Medical Sciences, University of Wisconsin, School of Veterinary Medicine, 2015 Linden Drive, Madison 53706-1102, USA.
authors.forename: A I
authors.initials: AI
authors.lastname: Risberg
authors.forename: C B
authors.initials: CB
authors.lastname: Webb
authors.forename: A J
authors.initials: AJ
authors.lastname: Cooley
authors.forename: S F
authors.initials: SF
authors.lastname: Peek
authors.forename: B J
authors.initials: BJ
authors.lastname: Darien
mesh_terms: D000818:Animals; D005260:Female; D006614:Hindlimb; D006734:Horse Diseases / Q000382:microbiology* / Q000473:pathology*; D006736:Horses; D012867:Skin / Q000473:pathology; D013207:Staphylococcal Skin Infections / Q000473:pathology / Q000662:veterinary*; D018366:Vasculitis, Leukocytoclastic, Cutaneous / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*