This is Dr. Stephenson here. It is hard to tell for sure without seeing the kitty but my first guess would be possibly ringworm. Ringworm will show up as bald patches with dry/scaly skin. They usually aren't itchy from ringworm. Other possibilities are skin mites or mange (not seen very often in cats) or even possibly an allergy to something. Miconazole cream works well for ringworm..you can get it over the counter at any local pharmacy. Maybe give it a try? It won't hurt him if it isn't ringworm but the problem with topicals in cats is they usually groom it off. If it is mange..ivermectin injections are treatment of choice which your large animal vets should have..that is usually inexpensive. Hope this helps.
Veterinarian
3 1/2 years as a general practioner, interests are feline medicine and emergency medicine