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Why is my dog losing hair on her back end and chewing until raw?

Updated On September 23rd, 2025

Pet's info: Dog | American Pit Bull Terrier | Female | unspayed | 4 years old | 80 lbs

My dog has lost her hair on her back end and hind legs and chews herself raw

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1 Answer

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Answered By Destini R. Holloway, DVM

Veterinarian

Published on January 29th, 2020

Poor girl. This looks highly suspicious for a mite issue (Demodexx). This could also just be a really bad allergy. I would highly recommend taking Beretta to your vet to have her skin tested. The vet needs to do a skin scrape to confirm if this is a mite problem first. If so, then you do have some reasonable options for treatment. Treatment for mites nowadays can come in the form of a flea preventative such as Simparica, Nexgard, or Bravecto. These all treat for demodexx mites given once every 30 days. These are prescriptoin only medications. It also looks like Beretta has a secondary bacterial infection on her skin. You will need to have your vet put her on a short course of antibiotics to clear this up. Until you can get her seen, it is best to get her started on a good topical shampoo. My top pick here for something that doesn't require a prescription is Duoxo calm shampoo available online. Also daily pet fish oils are best for pets with skin allergies since they are a natural anti-inflammatory. Visit your local pet store to see what options you have since all of them are equally effective in pets. I hope that Beretta's skin improves soon! Best of luck moving forward. Take care.

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