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Cat hair loss & vomiting after new food: Is it food allergy or fleas?

Updated on September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 4 years and 10 months old | 15 lbs

My cat food change since last week, and now she have hair loss around neck,is it caused by the food?she vomit once after we change the new food

1 Answer

Most Helpful Answer

David Elbeze, DVM, MRCVS

Answered By David Elbeze, DVM, MRCVS

Veterinarian

Published on November 6th, 2017

It could be due to food allergy but it is more likely to be due to fleas. treat her for fleas first with a high quality spot on such as Advantage and see if it solves the problem. if not try to switch her back to her previous food.
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