Corns are a common problem of the foot that can be painful and difficult to treat. They are due to too much pressure on an area of skin. They are part of a natural process that has gone wrong. Whenever there is too much pressure on the skin, that area of skin will thicken up to protect itself. If the pressure continues over a longer period of time, it becomes so thick that it is painful. This is similar to the process that happens when, for example, chopping wood. Doing this, you eventually develop a callus on your hand. The same thing happens on the foot with pressure from the ground or pressure on a toe from the shoe. When you stop chopping wood, the thicker skin on the hands go away. The problem in the foot is that you keep wearing shoes and you keep walking, so the pressure continues and the thicker skin forms into a corn and becomes painful.
Getting rid of corns is relatively easy and a skilful podiatrist can easily remove them. That is the easy bit. The hard bit is stopping them coming back. It is one thing to remove them, but unless you remove that cause (the higher pressures on the area), then they will just come back eventually. Corns do not have roots that they grow back from. They come back because the cause is still there. Removing a corn is like treating the symptom. They will return unless the cause is removed. This is where the skill of a podiatrist is needed to identify the proper cause. A full assessment is needed of the biomechanics, footwear, foot structure and lifestyle to work out just what it is that is causing the higher pressure. Once that cause has been identified, then different interventions can be used to remove that pressure. This could range from simple footwear advice to foot orthotic to surgery.