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My dog has round belly patches and bumps. Is it allergy or infection?

Updated on September 23rd, 2025

Pet's info: Dog | Boston Terrier | Male | neutered | 8 years and 3 months old | 20 lbs

My 8 year old Boston terrier has some round patches on his belly. There are some raised bumps as well. Is this a skin allergy or something more?

2 Answers

Most Helpful Answer

Published on May 23rd, 2022

Hi and thanks for your request.
These are epidermal collarettes.; they are 'footprints' of a vesicular or pustular lesion. They are therefore a common lesion type in canine pyoderma, which is a type of superficial skin infection. An allergy could be present, but the signs are solely compatible with an infection.
Disinfection can be provided with hibiscrub diluted with water 1:10 twice daily. Make sure to rinse off the solution and leave the skin dry. The signs should resolve in the next 4-5 days, if not a check up will be needed.
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Related Answers from Veterinarians

  • Answered By Maria DVM

    Veterinarian

    Published on February 23rd, 2018

    This looks like epidermal collarettes. A lot of people assume it is ringworm since they have the typical ring appearance. In fact, they are usually bacterial. I recommend taking Poppy to a veterinarian. They can provide appropriate antibiotics and potentially a topical shampoo to help heal these lesions. Thank you for using Petco Pet Education Center, formerly Petcoach.

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    2Pet Parents found this answer helpful

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