OH, MY ACHING FEET: FEET AND LEGS
Calluses and Corns

These occur when an area of the foot is exposed to constant pressure and
friction. Prevent them by wearing larger shoes, or add padding to the
shoes you have. To treat, use a pumice stone to scrape off the upper dead
layers of skin, then apply salicylic acid pads from your doctor. To avoid a
doctor, massage petroleum jelly on the corn and the surrounding area,
and wear heavy socks to bed. Repeat until the skin is soft again.