An ingrown toenail is a condition in which the edge of the toenail grows into the skin of the toe. The big toe is most commonly affected. Symptoms include pain, redness, and swelling around the toenail.
Update Date 4/16/2013
Updated by: C. Benjamin Ma, MD, Assistant Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.