Q. she is acting very normal and really active, but her fur is coming out in patches, mainly on her back nearest her tail
DR. CHRISTIE LONG, D.V.M., C.V.A.
A. If you haven't checked for fleas, I would strongly recommend you do so. The tail base area is a very common spot for flea infestations in cats. There are a number of great products on the market that can be used to rid her of fleas if you find them - I like Frontline. If you treat her for fleas and the hairloss persists, it could be mites/mange, or even ringworm. A visit to the vet will be warranted if she doesn't improve after flea treatment.