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My dog has red bumps on his back. What's causing this skin issue?

Updated On September 23rd, 2025

Pet's info: Dog | American Staffordshire Terrier | Male | 9 years and 3 months old | 178 lbs

Hi I’m curious what these red bumps are or what they could be from? I noticed them again after I gave him a bath with very mild and natural shampoo. I also changed his food a few months ago and have seen these bumps for a long time but they recently broke out again. Majority of them are on his back closer to his hind legs and tail. If I scratch him or brush him he really enjoys it but they get red and irritated if I do.

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1 Answer

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on October 29th, 2019

Chronic skin problems could be several things including allergies to fleas, allergies to something in the environment, food allergy or endocrine disease. Each one of these problems is detected and addressed differently and I recommend to discuss with your veterinarian which one to start hunting down first. Parasites are often ruled out with an oral medication like Simparica. Food allergy is best ruled out with a diet trial using a hydrolyzed protein. Endocrine diseases are detected with blood work. Environmental allergies are a little more difficult to detect but a response to therapy or a blood test can give an indication. Once you figure out and address the underlying cause, the lesions should not come back. There are a couple things you can do at home and they can help but they may not address the underlying cause. You can try adding in an omega 3 fatty acid supplement for dogs, this can help improve the skin health. You may also try changing his diet to something like Royal Canin or Nutro as they are aimed at skin health. Also protect the area from trauma by having Simba wear an elizabethan collar at all times to prevent licking if needed. I hope this helps and please feel free to post any additional questions.

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