All normal dogs have a small number of Demodex species mites that live in their hair follicles. These mites are not visible to the naked eye. But some dogs develop an overgrowth of these mites, a condition called demodicosis, or demodectic mange.
Your veterinarian has determined that your dog has allergies to certain substances, such as house dust mites and various grasses and insects, and may benefit from allergen injections to slowly lessen your pet's reaction to the substances. You can easily administer these injections at home.
Your veterinarian has just informed you that your dog has otitis, or inflammation of the ear. Luckily, most cases of otitis are caught during the early stage of the disease, so the chances for getting your dog's ears back in tip-top shape are good.