My cat is still scratching after 6 weeks on new food. Is it allergies?

Question

The vet and I have been wanting to see if Luna is allergic to her food, so she's been on this food for more than 6 weeks now (and she eats nothing else). Shouldn't she have stopped scratching by now if she's really allergic to normal food? Or how long should I wait to see if the food is working and it was her other regular food that was making her itchy? Pet's info: Cat | Domestic Shorthair | Female | spayed | 1 year and 2 months old | 8.2 lbs

Dr. Massimo Orioles, DVM, Cert AVP, MRCVS · Accepted Answer

I would recommend to wait up to 8 weeks before thinking about other causes. If not working, a skin scrape and more dermatological tests (including allergic testing on bloods) are required to determine if other causes are possible. Three main type of allergies are usually affecting pets: food allergies, flea and parasite related ones and environmental type (allergens coming from trees, pollens, dust etc etc). Some medications can be given by the vet in order to repair any possible skin lesions (like steroids and antibiotics). Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

My cat is still scratching after 6 weeks on new food. Is it allergies?

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