Corns can be a common disorder of the foot which can be painful and difficult to treat. Corns are due to too much pressure on an area of the skin. They are part of a natural process that has gone wrong. If there is excessive pressure on the skin, that area of skin will thicken up to protect itself. When the pressure continues over a long time, it becomes so thick that it is painful. This really is just like the process that happens when, by way of example, chopping wood. Doing this, you eventually develop a callus on your palm. Exactly the same thing takes place on the foot with pressure from the surface or pressure on a toe from footwear. When you halt chopping wood, the thicker skin on the hands go away. The challenge in the foot is that you keep putting on footwear and you keep walking, so the pressure continues and the thicker skin forms into a corn and will become painful.
Getting rid of corns is comparatively easy and a skilful podiatrist can easily remove them. That is the easy bit. The hard bit is preventing them coming back. It can be one thing to remove them, but if you don't take away that cause (the greater pressures on the skin), then they will just come back eventually. Corns don’t have roots which they re-grow from. They return as the cause remains. Taking away a corn is much like dealing with the symptom. They will come back unless the reason is taken away. This is where the ability of a podiatrist is necessary to identify the proper cause. A complete assessment is necessary of the function, footwear, foot shape and activities to work out just what it is that produces the higher pressure. Once that reason has been determined, then different interventions can be used to reduce that pressure. This could range from simple shoe advice to foot supports to surgery.