Itchy Scratchies

My middle dog, aka yellor dog, has a bad case of the Itchy Scratchies. She has had allergies as long as I have had her, yet this fall is the worst I have seen it. She has scratched so hard that she has wounds on her chest from her nails and bruises on her legs from biting. Obviously, what I am doing for her, at this time, is not working. I have a call in to the vet to see what else can be done for the poor girl. Hopefully we will find something soon to releive her Itchy Sctachies.