A corn is a raised nodule on the top or sides of the toes usually on the toe joints, with a hard nucleus or core which bores into the tissue pressing on the tissue and nerves. Corns are mainly found on the top of toe-joints or on the side of feet and are raised, shiny domes of hard thickened skin with a hard nucleus or centre. Corns are similar to calluses are caused by friction on the skin. Corns can cause pain and get inflamed when they press on a nerve in the foot or against a hard shoe, so it is important for your foot health and comfort to remove a corn as soon as it appears.
Corns can usually be avoided by wearing shoes that fit properly, are neither too loose or too tight, are not pointed and do not rub and cause friction. A useful tip when buying shoes is to consider trying on a pair at the end of the day when your feet could be warm and slightly swollen after being stood on all day. It is also good to remember to wear socks that are the right size and not too small or too large which will also cause the toes to bunch up and rub against the shoe.
A callus is an area of thick, hard skin on sides of the large toes or underneath the food caused by repeated friction or pressure from shoes or socks which are too tight.