Toe deformities, such as hammertoe or claw toe, can lead to corns. Improperly fitting shoes are a leading cause of corns and calluses. Corns and Calluses can be treated with over-the-counter callus removers, soaking your feet regularly, using a pumice stone, or trimmed in addition to the application of a corn pad. Medication or cortisone injections can be used to rapidly reduce pain and swelling. You can prevent a corn or callus by switching to better shoes, wearing an orthotic device and by wearing socks with double-thick toes and heels and nylon hose with a cotton sole.