All three sides of the nail except the free edge meet the skin folds and form a groove called the nail groove. A nail groove infection is an infection that occurs in the nail groove area. Infections between the nail and the nail bed are called subungual abscesses. The two can be transformed into each other or exist simultaneously. Infections of the nail groove are often caused by puncture wounds, abrasions, ingrown nails, or the removal of an “inverted splinter” from the nail groove and nearby tissues. Inflammatory nail abscesses often occur as a result of the spread of nail infection or infection caused by a stab wound under the nail or a crush injury to the end of the finger, resulting in a secondary infection of the nail hematoma, mainly caused by Staphylococcus aureus. The infection may spread to the nail root and the opposite nail groove, forming perineuritis, and may also spread to the nail to form a sub nail abscess. The pain increases, the swelling is obvious, and yellowish-white pus can be seen under the nail to float the nail up, which can develop into purulent dactylitis or even cause osteomyelitis of the finger bone if not disposed of in time, and can also become chronic nail sulcus, persistent nail sulcus or sub nail abscess, as the infection is superficial, so the systemic symptoms are often not obvious. In the treatment, early measures such as hot compresses, physiotherapy, external compresses, application of iodine or antibiotics are available. If there is already pus, a longitudinal incision can be made at the nail groove for drainage. If the infection has involved the subcutaneous surrounding of the nail base, a longitudinal incision can be made in each side of the nail groove, the nail root can be turned up, the nail root can be removed, and a small piece of petroleum jelly gauze or latex sheet can be placed for drainage. If pus has accumulated under the nail bed, the nail should be removed or the nail should be cut off from the pus cavity. When removing the nail, care should be taken to avoid damaging the nail bed so that the new nail does not become deformed in the future. Treatment of nail fungus should focus on prevention, and once it occurs, it should be treated aggressively. Nail fungus is not an acute disease, and its occurrence can be effectively prevented. The main points of prevention and treatment are as follows: 1. Wear shoes that are loose in the front, never wear shoes that are too pinchy, and keep your toes moving around. 2, do not cut the toenail too short, especially on both sides of the nail groove, to trim the smooth, toenail free edge to square, should not be round or pointed shape. Prevent toenails from growing into the flesh and causing ingrown toenails. 3, such as already suffering from ingrown nails, to often find a professional pedicurist pedicure, do not wait to tie too deep to repair. If necessary, after a professional soft nail conditioning nail treatment. 4, usually care for the skin around the toenail, do not make any damage to it, not to pull the “barb” by hand. 5, prevention is better than cure. Wooden thorns, bamboo thorns, etc. are the easiest foreign objects to pierce the toenail groove in daily life, participate in labor or busy with household chores, be extra careful. 6, usually pay attention to the maintenance of the toes, after washing hands, before going to bed rub some petroleum jelly or skin cream, can enhance the skin around the nail groove resistance to disease. 4, when there is a small injury nail infection is important to prevent, once it occurs should be actively treated. If you have a small injury, you can apply 2% iodine and then wrap it with a band-aid to prevent infection. 5, nail gourd infection early available hot compress, physical therapy, topical fish oil ointment or San Huang San, if necessary, take sulfonamide or antibiotics. 6, if the pus has been suppurated should go to the hospital in time to cut, the pus drainage out. Prevent the infection from spreading and causing osteomyelitis of the finger bone. 7.If pus accumulates under the nail, the nail should be removed to facilitate adequate drainage and complete healing. Iodine application soak: As soon as a little trauma or breakage occurs to the toe, use iodine to rub or soak the affected toe 4-6 times a day for 15-20 minutes each time until the skin turns white, using the disinfecting effect of iodine to corrode the diseased skin tissue and allow it to regrow to prevent nail infection, and after rubbing 2% iodine, wrap it with a band-aid to prevent infection from occurring.