here is some info on allergies as I have been dealing with it for 5 1/2 years now with Dee Dee so I wrote up this info to help others.
If you do allergy testing then do it with either VARL,HESKA OR GREER LABS per our dermatologist
http://www.yorkietalk.com/forums/yor...ml#post3147954
from what I have read the oatmeal shampoo can be a problem as well as blue buffalo food as too many ingredients for an allergy dog and oatmeal is a grain and allergy dogs can be allergic to oatmeal shampoo for that reason