Chloe was 4 months old this weekend and I have been experiencing terrible hair loss. She has patches that are now almost bald. My vet has no idea and she was on antibiotics and benadryl for awhile but no help there. I bought her a premium food containing no corn bi-products as someone here mentioned that it might be an allergy to corn. As I understand, she is too young to be blowing her puppy coat, correct? She doesn't scratch or really act like this bothers her but she isn't the prettiest doodle at the moment.