[header] How to soothe a dog's itchy ears [title] Know when to see a veterinarian. [step] If you've noticed your dog constantly scratching his ears, get him examined. The vet will use a tool (otoscope) to examine deep inside the ear canal and check if the eardrum (tympanum) is intact. 
The vet will also look for other causes of itchy ears. For example, the vet may swab your dog's ears to diagnose an infection.