We have a young cat who was a stray by our house. A few weeks ago we had her spayed, and when she came back we started noticing skin lesions on her belly and side. It's like a ring of dead skin, and then the skin in the middle of the ring just dies and falls off, leaving basically almost a hole in the skin. We took her to a emergency clinic who prescribed an antibiotic and offered to do a culture for $200 but we couldn't afford that right now. So the cat is on antibiotics, pain killers, and has a cone so as not to lick the wounds. They shaved her some more and found even more of these patches on her back. I have never heard of anything like this, and I want to make sure we take action before it gets any worse. As far as the cat herself goes, she seems completely normal behaviorally, she doesn't even seem bothered by the holes in her skin.