My 5 year old Border Collie has a bald spot on her left side. I have taken her to two different vets. Both thought it was allergies and put her on steriods and antibiotics. The meds made the spot smaller, but now that she is off the meds, it has gotten bigger. There are small bumps around the perimeter of the spot and she does bite the spot occassionally. I don't know what to do next. Change food, get another vet opinion, or try my regular vet again? Could hypothyroid cause a bald spot on one side? Any suggestions would be appreciated. Thanks. L