If the oil was working that is great BUT another thing to consider is a food allergy. I have a Carolina dog and she was scratching all the time. Checked with the Vet. He suggested allergies especially since it tended to be really bad in the fall. DH is a search buff! He found out a lot of animals have food allergies, most are to wheat and corn. Well almost all the dry food, especially snacks or treats or made of it too! I was taught that if the offending ingrediant is with in the first 3-4 "made of" it usually will casue problems.
We switched her "Dry" food slowly to Salmon and sweet potato, she has done well with that. Treats are another thing hard to find. I find dried checken and I cook liver for her.
Good luck to you,
Dawn227