My cat has lost her fur on her hind quarters. She has had a rash on her face for quite some time but we moved last January and during that time she lost the fur on her hind quarters....has anyone ever heard of this?? My vet thinks it is just food allergies but I have purchased expensive brands...I have tried everything even Science Diet and Pro Plan. Nothing seems to help. She scratches alot also until she bleeds. I have tried changing foods and feeding dishes also.