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Why is my dog's back itching if she's on flea meds and had Benadryl?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | spayed | 6 years and 1 month old | 34 lbs

My Soft coated wheaten terrier mix started itching. Shes on a flea tick and heartworm prevention & i check her so its not that. But in two specific spot on her back i see this. What could it be? Shes 34 pounds and i gave her 1 25 mg benadryl 6 hours ago but shes still itching

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1 Answer

Most Helpful Answer

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Answered By Daniel Fonza, DVM

Veterinarian

Published on December 23rd, 2017

Hi there and thank you for using Petco Pet Education Center, formerly Petcoach to address your concern. This still may be a skin allergy but Benadryl sometimes does not work. I would recommend using a shampoo such as Douxo PS Chlorhexidine combination shampoo and bathe twice weekly until resolve. I would also recommend using products such as welactin omega 3 fish oil, essential 6 spot on by dermoscent and malacetic conditioning spray. I hope this helps! Please let me know if you have any other questions or concerns and I would be more than happy to help you further. All of these product recommendations can be found online. If the problem becomes worse, I would recommend having your veterinarian examine Sofie.

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