摘要To the Editor:Ingrown toenail,also known as onychocryptosis or unguis incarnates,occurs when the periungual skin is punctured by its corresponding nail plate,resulting in a cascade of foreign body,inflammatory,infectious,and reparative processes.Most commonly,big toe is involved.Without proper treatment,it would be very painful and negatively affects the patient's walking and greatly hampers the quality of the individual's life.Till now,many different treatments have been proposed.In general,the treatment for ingrown toenails can be divided into conservative approaches (including medical and podiatric methods) and surgical approaches.The choice of treatment is usually based on the Heifetz classification stage of the ingrown toenails.Mostly ingrown toenails with Heifetz Stage Ⅱ and Ⅲ need surgical approaches or podiatric methods.