Have you tried changing his food? Our dog had food allergies which manifested as scabby, dry, itchy sores and lots of hair loss, and she was allergic to airborne pollen in spring. Changing her food to lamb and rice worked except in spring, when she had to take steroids, unfortunately. May work the same with cats.

There's a cat box? I have just gotten a new kitty, haven't had one in quite a while, and need all the advice I can find. Demon Toebiter is his provisional name. If he lives past kittenhood I'll consider something sweeter.