Canis ISSN: 2398-2942

Skin: 'idiopathic' furunculosis (German Shepherd Dog)

Synonym(s): German Shepherd Dog pyoderma, German Shepherd Dog folliculitis, furunculosis and cellulitis, perianal fistula

Contributor(s): David Scarff, Susan E Shaw, Stephen White

Introduction

  • Idiopathic deep pyoderma of German Shepherd dog or German Shepherd dog crosses.
  • Cause: Staphylococcal spp, often with an underlying cause; occasionally no cause of infection is found.
  • If cause of infection is found severity of infection is well out of proportion to cause.
  • Signs: lesions aggressive, heal slowly and recur frequently.
  • Diagnosis: history, clinical signs, breed, histopathology, bacteriology, cytopathology.
  • Treatment: systemic antibiotics, topical antimicrobials, clipping.
  • Prognosis: usually responsive to therapy but can recur.

Pathogenesis

Etiology

  • Familial predispostion in German Shepherd breed (?autosomal recessive).

Predisposing factors

General
  • Insult to skin.
  • Immunodeficiency.

Specific

Pathophysiology

  • ?Inherited immunoincompetence and predisposing factor → decompensation → disproportionately severe pyoderma.
  • Some dogs decompensate for no reason, suggesting that immunodeficiency can worsen with advancing age.
  • Defect in cell-mediated immunity documented in small number of dogs.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Rosser E J Jr (1997) German shepherd dog pyoderma: a prospective study of 12 dogs. JAAHA 33 (4), 355-363 PubMed.
  • Miller W H Jr (1991) Deep pyoderma in two German Shepherd dogs associated with a cell-mediated immunodeficiency. JAAHA 27 (5), 513-7 VetMedResource.
  • Wisselink M A et al (1989) German Shepherd Dog pyoderma. A genetic disorder. Vet Quart 11 (3), 161-4 PubMed.
  • Wisselink M A et al (1985) Deep pyoderma in the German Shepherd Dog. JAAHA 21 (6), 773-6 VetMedResource.

Other sources of information

  • Rosser E J Jr (2006)German Shepherd dog pyoderma.Vet Clin North Am Small Anim Pract36(1), 203-211PubMed.
  • Scott D W, Miller W H & Griffin C E (1995)Small Animal Dermatology. 5th edn. Philadelphia: W B Saunders. ISBN 0 7216 4850 9.
  • Yager J A & Wilcock B P (1994)Color Atlas and Text of Surgical Pathology of the Dog and Cat.London: Wolfe Publishing, Mosby Year Book Europe. ISBN 0 7234 1827 6.
  • Gross T L, Irkhe P J & Walder E J (1992)Veterinary Dermatopathology.St Louis: Mosby Year Book. ISBN 0 8016 5809 8.


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