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Why are my cats scratching and scabbing after Frontline Plus?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 4 years and 9 months old

I have two indoor cats and give flee treatment each month but this month I used Frontline plus as recommended because we moved into a house i feel had fleas previously. the cats have scabs on their necks and scratching a lot. what can this be?

1 Answer

Most Helpful Answer

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Answered By Megan, DVM, CVA

Veterinarian

Published on November 21st, 2017

This could be secondary to the fleas or a reaction to frontline. You can try Benadryl (see the link below) but I worry that they need to see your vet since there are scabs. This usually indicates that they may need an antibiotic or stronger allergy medicine like some steroids. Also make sure you treat the house and yard for fleas as fleas don’t normally live on the pet but in the environment. I hope this helps. https://www.petcoach.co/canigive/cat/benadryl/

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