Generally, unless your cat has picked up mites from another animal, ear infections are a secondary condition. That means they are actually the result of some other underlying medical problem. A cat will show his discomfort by scratching or pawing at his ear or shaking or tilting his head in the direction of the painful ear. If the eardrum is fine but infection has reached the middle ear, the vet may prescribe systemic antibiotics. If your cat has chronic ear infections, the vet may prescribe a medication to help reduce the swelling of tissue in the ear canal. Synotic Otic is used in dogs and cats in the ear to relieve inflammation and pain due to chronic allergies or infections.