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My dog has a red spot under a scab. Is it a bug bite or allergies?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | spayed | 10 years and 1 month old | 4 lbs

I was holding her & then I felt something, it was a scab. Under it was this red spot, it’s not a bump. It’s not bleeding or hurting. I cut the hair around it including the scab to get a better look & also cleaned the area. I bathed her a few days ago & it wasn’t there. Could this be allergies? Spring is in full effect here. A bug bite? She bit herself to scratch? Should I be worried? She has no other health problems & it’s not as big as it looks. She is also normal & as hyper as she usually is.

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1 Answer

Most Helpful Answer

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Answered By Catherine Stecyk

Veterinarian

Published on March 5th, 2019

Hello and thank you for reaching out to Petco Pet Education Center, formerly Petcoach. She definitely could have gotten a bug bite in that area that caused her to itch/bite at that area, creating a scab. If it is the only small area, I'd say a single bug bite is more likely than something like allergies, which tend to affect a diffuse part of the body. As long as she is acting normally at home (not continuously itching, and she is eating/drinking normally), I recommend monitoring her at home. You can check that site daily to see if it is getting smaller and less red. If you notice that it is getting bigger, or you notice the development of more similar spots, or she is licking/biting at it, I recommend having her seen by your veterinarian. I hope this is helpful - best of luck with Precious!

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