Signs associated with skin disease range from simple, isolated single lesions to generalized itching and hair loss. Ringworm is a fungal infection that spreads from horse to horse through common grooming tools, saddle pads or harness. Initially, ringworm lesions will appear as small, circular patches of hair loss with scabby or flaking skin beneath. If untreated, these lesions may progress to large, asymmetric areas of broken hairs and blister formation with scabs. Occasionally, ringworm lesions are very itchy.
Ringworm is extremely contagious both horse to horse and horse to human.
If you suspect ringworm, begin treatment immediately. This includes isolating the affected horse and disinfecting all tack and grooming equipment. Treatments should be repeated daily for five days, then weekly until lesions are healed. This bacteria lives in soil and is commonly observed during prolonged wetness. Infected animals are often considered a source of infection for spread of this contagious disease.