Become without doubt one of the most common problems of the skin of the feet and also hands. In fact, they are one of the most common conditions, particularly in our feet. These are corns or calluses, which are basically thickened skin layers or thick layers of hardened skin whose function, believe it or not, it is to protect the area where it appears.
We can give as an example the hands of a farmer or carpenter: in their hands calluses usually occur as a result of their work, and how our skin is to prevent the development of much more painful blisters.
These must be differentiated from the nails, which are skin lumps that have a central core (as a kind of tip that is embedded in the skin). The nails are composed of hardened keratin, so when preparing tend to be very painful. This symptom is not characteristic of callus, which to be an accumulation of dead skin does not tend to cause almost any problem.