Dogs with ringworm are very itchy. In order to prevent the dog from scratching, the owner can wear a shame ring to prevent the skin flakes from falling on other parts of the body and causing new ringworm. After discovering that the dog has ringworm, the owner should apply medicine and feed vitamins for treatment. During this period, the owner should feed less irritating food. The owner should wear gloves when touching the ringworm to avoid infection.