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Erythema multiforme in two horses.

¹Department of Companion Animal Medicine and Surgery, Faculty of Veterinary Science, Medical University of Southern Africa, Medunsa.

Journal of the South African Veterinary Association

|September 1, 1991

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Erythema multiforme, a rare skin condition, was diagnosed in two South African horses. Both horses recovered spontaneously within three months.

Area of Science:

Veterinary Dermatology
Equine Pathology

Background:

Erythema multiforme is a rare mucocutaneous condition.
First report of erythema multiforme in South African horses.

Observation:

Two horses presented with sudden, severe outbreaks of raised, non-pruritic plaques.
Lesions were symmetrically distributed on the neck and trunk.
No alopecia was observed.

Findings:

Histopathology revealed hydropic degeneration of basal epidermal cells and keratinocyte necrosis.
Intra-epidermal and sub-epidermal clefts were observed.
Dermal perivascular infiltrates were present.

Implications:

This study documents a novel occurrence of erythema multiforme in equine populations in South Africa.

Related Experiment Videos

Further research is needed to identify potential triggers and understand pathogenesis.

Highlights the importance of recognizing this condition in equine dermatology.