Ingrown toenails are a common foot problem in both children and adults alike. They are usually caused when the corners of the nail grow incorrectly and penetrate the skin. Some cases can cause extremely minor pain, however, if they are left unattended then they can get infected. The toe can appear swollen and red like in gout or even leak yellowish pus in extreme cases of toenail infection.
Ingrown nails are typically caused by repeated trauma to the nail. It can happen to athletic people who are stepped on often while playing sports or it can be caused by simply wearing shoes that are too small or are too pointy for your feet. Patients that cut their own nails may be doing it improperly thus causing the toenail to grow incorrectly causing it to become ingrown. To prevent ingrown nails it is always a good idea to wear sheos with a wider toebox and cut your nails straight across instead of an angle.