Sweet itch (summer seasonal recurrent dermatitis) causes intense itching and self-trauma in affected horses. Effective management significantly reduces suffering in this common and distressing condition.
Sweet itch causes intense, sustained itching that profoundly affects horse welfare during the summer season. Horses rub affected areas against fences, trees, and posts until bleeding and open wounds develop. The compulsive nature of the itching behavior indicates significant distress. Without management, affected horses lose mane and tail hair, develop thickened, scarred skin, and experience chronic discomfort throughout the midge season. They may show irritability, reduced tolerance to grooming, and sleep disruption from itching. Comprehensive management combining physical barriers (sweet itch rugs, fly masks), avoidance of midge activity peaks (dawn and dusk), stabling during peak midge periods, and veterinary treatment including antihistamines and in severe cases corticosteroids, can substantially reduce suffering.