The allergies come from the starches is the food prolly, like any food that has grains, corn etc. my dog had allergies really bad and i had to take him to the vets to get him on steriods for them and i think if you give him vitamin C it should help improve somewhat. i put special lotions on the spots where he gets them and it helped so much more better! you can buy spray also. or feed him pure cooked chicken and possibly rice tho it might cause the allergies to start again..