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What causes a swollen area and blister near my dog's tail?

Updated On September 23rd, 2025

Hi, my dog has a swollen area at the top of his tail, right above his anus, and a small pink blister(I dont know) on one side of the swollen part

1 Answer

Most Helpful Answer

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Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on September 7th, 2017

I would recommend that you have your dog evaluated by a veterinarian. Possible causes of wounds in the area that you mentioned can be caused by anal gland infection or abscess, perianal fistula, or wounds caused by excessive scooting - which can be caused by intestinal parasites or allergies (fleas, food, environmental, etc). Until you can have your dog evaluated by a vet, it may need to wear an e-collar or cone to prevent licking these areas. Licking will spread bacteria and delay healing.

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