[107barney]

Most allergies in dogs are environmental, not food related. I have a dog with both and it's a never-ending battle. I like the idea of a vet first to rule out any medical causes. Next bathe with a hypoallergenic shampoo and conditioner. Biogroom makes a decent one. If that doesn't work consider whether there's a food component. Everyone always blames chicken as a top allergen in dogs, but I've found that grains and fillers are problematic. My own dog cannot eat anything but a vegetarian diet and still needs allergy medications.