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Why does my dog keep itching and biting her back? Shampoos failed.

Updated On September 23rd, 2025

Pet's info: Dog | Miniature Schnauzer | Female | unspayed | 2 years and 2 months old | 12 lbs

Paris itches and bites her back all the time and I don't know why!! I have tried medical shampoo and medicine but nothing seems to help!!

1 Answer

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on January 27th, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Paris! Medicated shampoos may work for a skin infection but rarely fix the problem by themselves. If she doesn't have an infection a medicated shampoo will likely not help at all. I would be sure Paris is on a good flea medication (the back is a common location for fleas). I like the oral formulations like Nexgard, Bravecto, Simparica or the Seresto collar. Otherwise Paris may have allergies and need to have her diet changed (chicken is the biggest allergen in dogs with food allergies), something to control the scratching (apoquel, antihistamines) and medications to get rid of an infection if present. Since the shampoos has failed, I would have Paris seen by your Vet for an exam, if she is constantly scratching and biting she is uncomfortable! I hope this helps and I wish Paris the very best!

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