We have a cat that "found us" in the woods. We've spent over $1200 trying to get him healthy. We've taken chicken products and grain products away and took all plastic items (cats are quite often allergic to plastic). Right now he has two spots on his shoulder blades where he has scratched holes. As soon as it dries and starts to heal, it gets itchy and he starts scratching. I'm giving him steriods right now. I'll keep checking back to see if someone has some ideas.
Lynn