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Corynebacterium folliculitis in a horse
K A Heffner1, S D White, C W Frevert
1Department of Medicine, School of Veterinary Medicine, Tufts University, North Grafton, MA 01536.
Summary
A 7-year-old Thoroughbred horse developed pruritic skin lesions caused by Corynebacterium pseudotuberculosis. Prompt oral trimethoprim-sulfadiazine treatment led to complete lesion resolution and hair regrowth.
Area of Science:
- Veterinary Dermatology
- Equine Medicine
- Bacterial Infections
Background:
- Pruritic skin lesions in horses can have various etiologies.
- Dermatophilosis and other bacterial folliculitis are common differential diagnoses.
- Corynebacterium pseudotuberculosis is an important bacterial pathogen in horses.
Observation:
- A 7-year-old Thoroughbred presented with mildly pruritic, multifocal skin lesions.
- Lesions evolved from nodules to alopecia and crusting.
- Clinical signs suggested a bacterial folliculitis.
Findings:
- Bacterial culture confirmed the presence of Corynebacterium pseudotuberculosis.
- Folliculitis was diagnosed as the primary dermatopathy.
- Oral trimethoprim-sulfadiazine paste was administered as treatment.
Implications:
- Corynebacterium pseudotuberculosis can cause pruritic skin disease in horses.
- Trimethoprim-sulfadiazine is an effective treatment for this condition.
- Early diagnosis and treatment promote favorable outcomes and hair regrowth.