Originally Posted by tf&tmom

Dog food, Dog food Dog food can't say it enough change brands.
We had the same problem almost washed the poor dogs hair off with all the stuff the vet had gave us from fleas, didn't have any and he goes one will make some dogs itch to she has dry skin.
It was the food we were feeding her. At the time was feeding O'Roy dog food which she loved and we loved as cheap but store was out of it one day and got another brand. She quit itching and then got another bad and she started again.
So try another brand of dog food, you may have to try several till you find one that works for her. But keep trying as am sure that is what is wrong with your dog.
After we found out the vet said lots of dogs have a allergy to dog food. But never told us till we found out ourselves.
Hope your dog gets better. Keep us posted.