What are the symptoms of bovine ringworm?

Symptoms: Ringworm lesions commonly appear on the head (around the eyes, corners of the mouth, face), neck and anus of cattle. The lesions begin as small nodules covered with grayish-white scales, which gradually enlarge and form circular raised crusts protruding above the skin surface, resembling grayish-white asbestos-like crusts. The crusts range in size from a coin to a walnut or larger; some crusts may be torn off the skin due to friction or other causes, exposing the damaged skin wound surface. In severe cases, the crusts merge into large patches or become disseminated over the entire body of the cattle; affected animals show intense itching and tenderness, appear restless, rub against objects, and eat less.