I would first suggest a higher quality food. I personally would suggest a raw diet, but I know not everyone wants to go that route.
I'm sure that someone can recommend a good kibble. One that a lot of people like/recommend is Taste of the Wild.
Our pup had some itching problems as well. We started giving him supplements. He gets vitamin E, krill oil capsules, and coconut oil. Every once in awhile we also give him a probiotic. It has definitely helped immensely.
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