We have a FLV+ cat who has developed over the course of his stay at our vet's some very red, very hard scabbing. It does not seem to bother him but it is nasty. He has some hairloss in the area as well. It is ONLY on his belly. He doesn't really bother it. Our vet has been treating it as an allergic reaction, but the standard treatment doesn't seem to be helping (prednisone/animaxx). We had another cat who had developed this same type of thing a month or so back. Our vet eventually performed surgery to remove the affected area and he died afterwards. I have done extensive research and found nothing that really matches up. I can post pictures tomorrow.