A podiatrist is a medical professional specializing in the foot and ankle specialist Chattanooga tn. Podiatrists prevent, diagnose and treat foot problems such as sprains, fractures, bunions (misaligned big toe joints that become swollen and tender), heel pain/spurs (swelling and thickening on the bottom of the foot), warts, corns, calluses, neuromas (enlarged nerves, usually between the third and fourth toes), corns and other related cases.