Wear comfortable shoes. Ill-fitting footwear often causes corns and calluses. Wear shoes that do not cramp your toes.
Look at the heels on an old pair of shoes. If one side is markedly worn, you may be shifting your weight unevenly as you walk. Ask your physician or podiatrist if a shoe insert (orthotic) could help distribute your weight more evenly.
Protect your skin. Visit your pharmacy or medical supply store.