calloLa Hyperkeratosis, commonly known as callus or " diminudivo hardness " is an area of the skin in which an accumulation of keratin corresponding to the compaction of inert dead cells of the epidermis is produced in response to a stimulus that can be, generally, excessive friction or rubbing. Calluses are most common in the area of the foot or hand depending on the activity or factor which has arisen the callus.
