I also have a full blooded lab who has suffered endlessly with skin issues and itching. I would recommend a environmental allergy test. But I just have found the solution to her food. I feed her vegatarian natural balance wet canned dog food. This is the dog I’ve taken to the vet at least 50 times in 3 years with food, skin, ear issues. We tried signature, ultamino, royal canin, and multiple other foods. Turns out she is allergic to all meat protein which is common in some full blooded dogs. She also was allergic to dust mites and storage mites (also found in bagged food). I would try to switch your dog to the wet food and see if that helps. It did wonders for mine, her ears are crystal clear (never been able to say that before in her life). I am so happy with this product and hope your baby gets better soon!
