Losing Fur

Kerry, my newish cat, seems to be lacking fur on part of her belly near
the back legs. I only just noticed - she loves being petted, but like
many cats, she takes exception to belly-rubs so I hadn't looked at her
belly in quite a while. I have an appointment with the vet for her
tomorrow - I hope it's just a bit of minor over-grooming.

Anyone have experience with cats losing fur?? She certainly grew it all
back after she was spayed about a year ago, and now, a largish area is
either very thin of or missing fur.

--
Cheryl