sounds like environmental allergies
90% of the time it is environmental not food but raw is not a bad way to feed in allergy dogs if not on immune suppressant drugs but some still do raw with immune suppressant drugs for cancer dogs and allergy dogs. Ann on here feeds raw and her dog is on atopica i believe but hopefully she will post as well. I will go post an informative thread as i wrote alot of info about it since i have an allergy dog too