Hello everyone New to the group. Im having a. Issue with our 1 year old yellow English female. About 2 weeks ago I noticed a small patch of hair missing on her right side. Then I noticed one on the left. I took her to the vet. We have been back 3 times still no answers. She ha smore lesions and air loss now on her sides and hind thighs. Vets has rules out, mites, bacteria, and ring warm. However they haven't been able to give us a straight answer as to what it is. Also when I comb her the hair never stops. The lesions do not seems to itch or bother her it just looks terrible and the hair allover is worse then never. She was on purina pro plan puppy formula for large dog breed. We have recently, about a month ago switched to purina pro plan adult formula. Any thoughts what what this could be and how to help? Thanks Keith