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My cat has a sore ear and bumps. Is it an infection or something else?

Updated on September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 3 years and 4 months old | 13 lbs

He had a cyst on back of ear that cleared up after three days- warm water cotton ball applied, but now on same ear is sore shown in photo. Inside of ear looks relatively normal. Back side of both ears have small bumps. Cat is acting normal and eating normal.

1 Answer

Most Helpful Answer

Lauren Jones VMD

Answered By Lauren Jones VMD

Veterinarian

Published on May 27th, 2017

With a clean ear canal, the most common cause of tiny bumps on the ear itself is related to hypersensitivity reactions from insect bites. The inflamed and sore lesion in front of Teak's left ear is most likely due to self-trauma from him scratching. The concern is that this skin may be infected from the excessive scratching. Your best bet is to take Teak to his vet for an exam because he may need a course of antibiotics and antihistamines to manage this issue. Be sure that Teak is receiving a high quality flea preventative (such as Advantage or Revolution) monthly because flea bites can also cause bumps on the ears. I hope that all goes well!
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