You may experience pain, discomfort, and infection with a curled toenail. Ingrown toenails are common and often affect your big toe. Emergency care may be needed if you notice red streaks on your ...

An ingrown toenail—medically known as onychocryptosis—refers to a toenail that has grown into your skin. The top corner of the nail grows into the flesh, causing pain and inflammation. Most ingrown ...