Companion Animals

Ringworm in Horses: Welfare Impact and Treatment

Welfare guide to equine ringworm — a common fungal skin infection causing significant discomfort and transmission risk.

Key Facts

Equine ringworm (dermatophytosis) is a contagious fungal infection, not caused by worms
Common causative species include Trichophyton equinum and Microsporum gypseum
Clinical signs include circular areas of hair loss, scaling, and crusting — typically on the girth, saddle area, and head
The infection causes varying degrees of discomfort — from mild itching to severe irritation
Ringworm is highly contagious between horses — and zoonotic to humans
Transmission occurs through direct contact and contaminated equipment — sharing tack is a primary risk factor
Treatment with antifungal washes (enilconazole, miconazole) is effective but requires consistent application
Infected horses should not be worked with saddle or girth contact over lesions

Welfare Significance

Ringworm causes real discomfort — affected horses may resent grooming, tack contact, and handling around lesions. While not life-threatening, the condition causes welfare deterioration from irritation and disruption of normal management. Prompt diagnosis, effective antifungal treatment, and strict hygiene protocols resolve the condition and prevent spread.

What You Can Do

Isolate horses with ringworm from others and implement strict equipment hygiene
Apply antifungal treatment consistently for the full recommended course
Disinfect all shared equipment — tack, grooming tools, rugs
Wear gloves when handling affected horses to prevent zoonotic transmission