For any cat owners: my cat is losing the hair near the base of her tail. Does any one have any input?

Funny you should ask this, since my cat had this exact same problem a couple of months ago. When I took her to the vet, he told me that she was pulling out her hair! He said that this can be caused by a few different things: 1) allergies, 2) a hormonal disorder or 3) stress. In order to rule out an allergy that might be causing severe itching (causing my cat to pull on her hair), he gave her an injection of an anti-inflammatory medication. He said that if the problem resolved with the injection, she most likely had an allergy to something. If the problem continued, blood work would have to be done to determine if there was a hormonal disorder. Then if the blood work turned out OK, we'd have to assume that the problem was due to stress. He told me that cats sometimes pull out their hair (usually at the base of the tail and/or on the belly) in response to stress, and then the behavior becomes a habit even after the source of the stress is gone -- my vet compared it to people biting their fingernails, which usually starts as a response to stress and then becomes just a habit. If it's determined to be a stress-related problem, there are medications such as anti-anxiety medications that can be prescribed. With my cat, it turned out that the anti-inflammatory injection worked to solve the problem so we didn't have to do any further investigation or treatment. Hopefully, your cat's problem will be as easy to take care of.

its just because of her age nothings wrong with her