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My dog has a red hairless bump under his chin. What should I do?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | unneutered | 1 year and 8 months old | 55 lbs

Hi , I recently discovered my dog has a red bump with no hair on it about the size of a dime under his mouth. Closer to his neck area. It's red and I'm not sure what it is or how to treat it. Please please I need answers before I schedule him to see a Vet in person. Thank you.

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1 Answer

Most Helpful Answer

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Answered By Justin Plunk, DVM

Veterinarian

Published on October 17th, 2017

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Niño's lesion, given his age, is most likely from a red button tumor, an arthropod (insect or arachnid) bite/sting, or a dermal foreign body. An exam will help narrow this down further and give a better idea of what to expect. If it is a red button tumor, it will take around 2 weeks and go away on its own, though it will ooze blood periodically in the meantime. Because he has other possibilities, I would recommend an exam by your veterinarian and possibly a fine needle aspirate to try to get a more narrow diagnosis for more pointed treatment. Hope this helps!

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