An ingrown toenail is not only painful but if left untreated can cause an infection or an abscess. An ingrown toenail is caused by a sharp side of the nail piercing the skin on the side or the tip of the toe. Inflammation and pain are the first symptoms of an ingrown toenail. It is possible to treat an ingrown toenail at home, however, if the symptoms get worse, no improvement is seen in three
. days, or a fever develops seek medical help. You can find more information here: http://www.emedicinehealth.com/ingrown_toenails/page6_em.htm#Self-Care%20at%20Home