Hard crusts around the edges of your dog’s ears may be caused by a fungal infection and ringworm on your dog’s skin. Dogs with fungal infections of the skin will have intense itching, as well as hair loss and flaking. This is the time for the owner to give the dog anti-fungal medication. If you find that your dog has a skin disease, you should clean the affected area of hair, disinfect it with diluted hydrogen peroxide or iodine, and then apply antifungal ointment. Be careful to put an Elizabethan ring on your dog after rubbing the medicine to prevent him from scratching the affected area.
