toenails, also known as onychocryptosis, is usually caused by trimming toenails too short, particularly on the sides of the big toes. They may also be caused by shoe pressure (from shoes that are too tight or short), injury, fungus infection, heredity, or poor foot structure. Ingrown toenails occur when the corners or sides of the toenail dig into the skin, often causing infection. A common ailment, ingrown toenails can be painful. Ingrown toenails start out hard, swollen, and tender. Left untreated, they may become sore, red, and infected and the skin may start to grow over the ingrown toenail. In most cases, treating ingrown toenails is simple: soak the foot in warm, soapy water several times each day. Avoid wearing tight shoes or socks. Antibiotics are sometimes prescribed if an infection is present. Note: Please consult your physician before taking any medications. In severe cases, if an acute infection occurs, surgical removal of part of the in