Ingrown toenails are toenails that have grown into the skin of the toe causing pain, swelling, redness and sometimes an infection. Most common, the corner of the big toe is affected, although the smaller toes can also develop this problem. Ingrown nails usually occur as a result of tight-fitting shoes, a curved pattern of the nail itself, a previous injury to the nail or improper cutting of the nail. Treatment usually includes partial or complete removal of the toenail under local anesthetic and can be done in the office with the return to normal activity in 12 – 24 hours.