Advice needed: Our senior Golden (13 years old), has been dealing with itchy/flaky skin for several months now. Multiple trips to the vet: antibiotics for a while, medicated shampoos, anti-fungal shampoo, now on thyroid meds for low thyroid. Still no change. I need a doggy dermatologist recommendation as well as any other helpful advice. Thinking of trying new food as well (she's on Fromm Whitefish and Potato). She's miserable.