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Why is my senior dog's face sore spreading and what should I do?

Updated On September 23rd, 2025

Pet's info: Dog | Boston Terrier | Female | spayed | 3 years and 3 months old | 20 lbs

My 13 yr old Boston terrier has developed a quarter size sore on the side of her face. I noticed it Friday night. The hair is missing and it’s wearing. There is a small growth near this area that looks suspicious to me. I cleaned it with peroxide and bacitracin ointment was applied. Today the area has spread. It’s larger and going farther down the side of her face. I’m not sure what to think. One last thing, she became deaf suddenly this last month. She can’t hear a thing.

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1 Answer

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Answered By Dr. Davis

Veterinarian

Published on April 1st, 2018

This looks like an area of moist dermatitis or hot spot. She may be rubbing the area increasing the inflammation. You are doing a good job with the treatment. This doesn't look like anything to be overly concerned about. As far as deafness goes it is common with older animals and they often do go deaf quickly. Thanks for using Petco Pet Education Center, formerly Petcoach to help you care for Libby.

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