I love my Abby to pieces but for the past year she has had an awful skin issue. One vet say allergies, one says just dry skin. Has anyone had experience with skin issues? Right under her chin between the big flaps of skin it gets raw and really red. She has lost the fur here because it is irritated. Now she has flaky skin in her back and has a smell to her. She also gets red blotces on her belly depending on the day. Any advice would be appreciated!