The head and legs are most commonly affected by ringworm, although the disease may spread over other parts of the dog's body if not treated. Dogs may scratch the lesions. The appearance of the lesions, the history of their development and the age of the dog are all helpful in diagnosing ringworm. The hair around the lesions is clipped, and special fungicidal shampoos or rinses are used for bathing the dog. Topical lime sulfur and mandatory systemics should be administered.
Ringworm is contagious to humans, particularly to children and to other household pets.
Adults should be careful to wash their hands thoroughly after handling an infected dog. If treated early, ringworm is readily controlled in humans. Other household pets should also be examined for ringworm. Allergic Skin Diseases Allergies in dogs are common. Many skin diseases seen in dogs are caused by an allergy.