Q. My cat has a rash on her belly and is chewing at it and chewing her hair out?
A. I would firstly ensure that you have treated for fleas with a good quality flea product from your vet as over the counter ones are not as effective. If you have ruled this out then it could be an allergic reaction to something in the diet or the environment. You should see your vet as soon as possible as it is causing your cat a lot of discomfort and they will be able to provide medications to stop the excessive itching, then you can work with your vet to decide what is causing the problem.