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My dog has a red rash and bump. What is it and what to do?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | unspayed | 6 months and 4 days old | 46 lbs

I just noticed this red rash like area on my dog and also a red bump that’s looks similar to a bite mark. Any idea what this looks like? She has vet appointment this Saturday for a check up but is there anything I can do about it until then?

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2 Answers

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on May 15th, 2019

Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question. It could be that Harley Moon has an allergic reaction to something outside, could have ringworm, or it could be puppy pyoderma (a skin infection). It's a very good idea to have this seen by a vet this week, and for now, keep an eye on her. If it appears to be itching her, you can can give her an oatmeal bath to see if that helps soothe her skin. I'd also put an Ecollar on her if she starts licking at it. You can make one at home or you can buy one at a pet store. I hope this helps!

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    Answered By Ana M, DVM

    Veterinarian

    Published on June 2nd, 2019

    Thank you for submitting your question regarding Harley. The pictures came through kind of blurry, but she does appear to have a rash. A common cause this time of year is seasonal allergies. You can try bathing her with a moisturizing shampoo and conditioner such as an oatmeal or fatty acid based formula to help soothe the skin. If this does not resolve the issue, then you should take her to see her veterinarian. She may need an antibiotic if there is an infection or an anti-itch medication. I hope this information helps!

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