The lesser toes are all the toes other than the big or great toe.
Corns are often painful thickened areas of skin on the toes. A hard corn forms where the skin is dry typically over one of the knuckles (joints) of the toes that will tend to rub on footwear.
A soft corn occurs where the skin is moist such as inbetween toes. The corns develop because of abnormal pressures on the skin, and is often because of poorly fitting shoes. Underneath every corn there is a prominence of bone and pressure from the shoe causes the skin to thicken.
A corn may eventually break down and thus not protect the toe. An ulcer can develop which can get infected.
There are three main deformities of the lesser toes. A hammer toe, a claw toe, and a mallet toe.