Hi, Hard skin can be caused by repeated pressure and friction against your skin, resulting in corns or
calluses. It most often occurs on your hands and feet from activities such as walking or running in tight shoes, or even standing in one place, you possibly, unknowingly, are placing your weight more on that side, thus, causing more thickening of the skin. To help keep it from forming all the time, try these suggestions:
wear thick, cushioned socks.