My Dani was scratching her ears and shaking her head.
Since she had just recovered from a severe ear infection, and the Vet said she was healed, I was at a loss as to what could be causing the itching. I thought ear mites, but I did not know how she could have gotten those since she is an indoor cat. It had been about 2 weeks after the final antibiotic drops and a clear bill of health from the Vet.
Well, to my surprise, The Vet said she had severe buildup of polyps. (we knew she had polyps before, but now it was causing irritation) He said she needed surgery (scoping to scrape out the polyps and to test for any malignany.
Well, she had the proceedure done, and it helped. But then the itching came back 3 weeks later. We just came from the Vet, and he said simply put a solution of ear cleaner in her ears once a week, to clean debris and excess was out. That he said should help.
Ssoooooo after this longwinded letter,.....I have stated several possibilities...Only the Vet can tell you what it is.