I'm super sorry for double posting this but I wasn't sure where to put it. My 9 month old pup has a weird irritated spot on one side of her face. It used to not bother her but lately she's been rubbing at it with her paw. We don't give her any food or treats with wheat or corn or any weird byproducts. After noticing the spot I asked an employee at a dog food store about it and she suggested taking chicken out of her diet, since most of her food had a lot of chicken in it. So we ditched the chicken treats and switched her to Natural Balance with sweet potato and venison, but the spot hasn't gone away and now she's losing hair there. Are there common allergens for GSDs? Should I pay to have her tested for allergies? Money is kind of tight but I don't want her to have an itchy irritated face if I can help her. Thank you!