A callus is a thickened area of skin that appears on areas of
the body exposed to repeated friction or irritation. The classic
examples are those people get on their feet when they wear a
pair of shoes that don’t fit properly. These thickened areas
feel rough and bumpy to the touch, but they usually aren’t
painful unless they grow very large or rub against shoes that
irritate them. They also form quite commonly on hands exposed to
friction from using instruments or even writing with a pencil or
pen for a long period of time. Calluses are a reaction to
repeated irritation and friction. In response to the constant
irritation and rubbing, skin cells in the outermost layer of the
skin build up to provide an additional layer of protection. They
aren’t a health threat, but they can be unsightly to look at.
Most people don’t want to put on a pair of sandals when they
have calluses on their feet. Calluses don’t require treatment
unless they become uncomfortable or it becomes difficult to wear
shoes because of them. S