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Why is my dog so itchy after Frontline & bath, with no visible rash?

Updated On September 23rd, 2025

Pet's info: Dog | Pembroke Welsh Corgi | Female | unspayed | 5 months and 9 days old | 25 lbs

I gave my dog a bath two days ago and Frontline yesterday. She's been very itchy especially on her back. She would bite, scratch and sometimes cries out for itchiness. Her skin looks normal, no redness or bumps. She eats, drinks and sleeps fine. Energetic as usual. I don't believe she has fleas either. What could be the cause? If dry skin, what are the signs and what can I do to help her?

1 Answer

Most Helpful Answer

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Answered By Jessica Keay, DVM

Veterinarian

Published on June 17th, 2019

I am sorry to hear about your dog! If the itching started just after the application of the Frontline some dogs can have a hypersensitivity type reaction to topical medications like this where it can cause severe irritation to the skin. I would recommend calling the company and letting them know, and they can advise you on what steps to take (which also may include refunding your money). If it was not related to the frontline there can be many different causes for itching in dogs https://www.petcoach.co/article/why-is-my-dog-so-itchy/ and you can try some at home treatments like fatty acid supplements and shampoos/conditioners such as Epi-soothe or Duoxo Calm, antihistamines like Benadryl or Zyrtec under guidance of your vet, https://veterinarypartner.vin.com/default.aspx?pid=19239&id=4951477

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