You can use mugwort leaves to bathe dogs with skin diseases, but mugwort leaves can only help relieve the itching of the dog's skin, and have no effect on treating skin diseases. If you want your dog's skin diseases to improve, you still need to buy saline and pet fungus drugs. smear. If your dog's skin disease is serious, you can send your dog to a pet hospital for a medicated bath, which will help it heal faster.