Summer Sores in Horses: Causes, Clinical Signs, and Diagnostics

Summer Sores in Horses: Causes, Clinical Signs, and Diagnostics

Summer sores are most often seen on a horse’s face and legs. | Courtesy Dustin Major, DVM, Dipl. ACVS (LA) Summer sores are skin lesions in horses mostly seen during the hot summer months when flies are active. These sores can range from small, red, seemingly innocuous ulcerated lesions around the mouth or legs to large, ulcerated, weeping, cankerlike masses that are not only aesthetically displeasing but also pose a significant health risk to a…