If your dog seems to have ear problems, first go to your vet for a checkup, and make sure you tell the vet about any past history with the ailment. You should try to remember when your dog first showed its symptoms, as well as what particular symptoms you observed. Be sure to tell the vet about any changes in habit, diet or other activities that may have led to your dog's current problem.
During the checkup, do make sure that all relevant tests are done to ensure that the correct diagnosis will is made. Tests normally include labs as well as the standard physical examination. If your dog is being uncooperative, then sedation may necessary and you should not try to prevent it – proper diagnostics are absolutely essential to your dog's wellbeing.
After the vet has made a diagnosis, antibiotics, topical ointments or other medications will probably be prescribed. Be sure to buy the prescription and give your dog the correct dosage. Stopping a course of treatment early can lead to complications recurrence. Therefore, you should not stop treating your dog with the medication until the prescribed period has completed or until the vet tells you to stop the medication.