What is a corn?
Foot corns are hardened layers of skin. These layers develop because of the pressure and friction on certain areas of the foot. They usually appear on areas of pressure like the heel, underneath the ball of your foot, and in between your toes. They can be quite painful to walk on and prevent you from wearing your shoes.
What causes corns?
Corns develop as a protective response from your skin to external pressure and friction. This can come from a mechanical defect in your gait, walking barefoot, tight shoes, exercises, etc. They usually get worse with time because as the corn gets bigger, the pressure around it also increases.