I think my roommate who is disables and not steady on his feet stepped on her tail a couple of months ago.
Today while helping her shed the skin on the tip of her tail I lifted a segment of shed and it was white underneath. it was then that I noticed that the underside of her tail in that area appeared to have no scales and it was also white. I inspected the rest of her tail and discovered what I believe are two abscesses further up the tail.
I will be taking her to the vet as soon as I can get an appointment. Unfortunately we don't have an exotic animal vet in town and I don't have the time to drive to the city to see one.