SAEVA Proceedings 2015 | Page 86
South African Equine Veterinary Association Congress 2015 Protea Hotel Stellenbosch
Pastern dermatitis and beyond
Annette Petersen*
Associate Professor of Dermatology
Department of Small Animal Clinical Sciences, Michigan State University, East Lansing,
Michigan, 48824-1314,
Email: [email protected]
Pastern dermatitis syndrome:
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Not a single disease but a cutaneous reaction pattern
Has primary and secondary causes
Infectious (viral, bacterial, fungal, parasitic)
Immune (vasculitis)/allergic disorders
Traumatic disorders
Contact dermatitis
(Urine scalding; iatrogenic “medication”)
Photodermatitis/ sunburn (plants/ hepatic)
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Dry form “Scratches”: alopecia, erythema, scales ,crusts
Moist form “Grease heel”: erythema, erosions, alopecia, serous to purulent crusting
dermatitis
Chronic form “Grapes”: excessive granulation tissue
Infections
Viral: Viral papilloma
Horse pox /Vaccinia
Bacterial: Dermatophilus congolensis
Staphylococcus spp
Streptococcus spp
Fusobacterium necrophorum
Fungal: Dermatophytes
Malassezia spp
Parasitic: Chorioptic mange mites
Poultry mites
Forage /harvest mites
Myiasis
Pelodera spp. Helminth
Habronemiasis
Chorioptes
Diagnosis: clinical signs,breed , skin scrapings or tape preps
Treatment
Clip!!
Remove crusts
Antiparasitic agents
Fipronil Spray ( Frontline)
Lime sulfur
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