Inflammation of the nail is usually caused by stab wounds, abrasions, ingrown nails or the removal of “inverted pricks” from the nail groove and nearby tissues. Inferior 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 at the end of the finger, resulting in a secondary infection of the nail hematoma, the main causative agent being Staphylococcus aureus. Clinical manifestations: Initially, one side of the nail groove becomes red, swollen and painful, and within a short time, the infection can become septic and spread to the root of the nail and the opposite nail groove, forming perineuritis, or spread to the nail to form a sub nail abscess. At this time, the pain increases, swelling is obvious, and yellowish-white pus can be seen under the nail floating up the nail, which can develop into purulent dactylitis or even cause osteomyelitis of the finger bone if not treated 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. The diagnosis is not difficult, and in terms of treatment, different treatment options are chosen according to the specific circumstances of the diseased nail. Although the disease is small, the pain caused to the patient is enormous and has seriously affected daily life and study. In the early stage, measures such as hot compresses, physical therapy, external antibiotic ointment or oral antibiotics can be used. If there is already pus, a longitudinal incision can be made at the nail groove for drainage. If the infection has involved the subcutaneous area at the base of the nail, a longitudinal incision can be made on each side of the nail sulcus to turn up the nail root, remove the nail root and place a small piece of petroleum jelly gauze or latex sheet 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. In my personal opinion, I am more opposed to nail removal at every turn. Most nail infections are not severe enough to warrant nail removal and can be cured with some simple treatments. One of the disadvantages of nail extraction is that it provides temporary relief and the new nail will grow out and become ingrown again; the second disadvantage of nail extraction is that it is very painful and difficult to walk. (Note: I have personal experience with this.) My treatment method is just the opposite of others, others are plucking nails, mine is plucking meat. The specific method is to use a nail separator to pick out the distal end of the toenail embedded in the meat, and then trim the distal part of the toenail with scissors to make it blunt and round, so that the toenail is not easily embedded in the meat to form an infection; at the same time, the rotten meat at the nail groove is scraped away with the nail separator to remove the infected tissue and give the toenail a space to grow. Afterwards, the soft tissue at the distal end of the toenail was compressed with an iodine swab twice a day for 20 minutes each time. This is combined with oral antibiotics for one to two weeks, which takes about a month, and the toenail gradually escapes from the nail canal and the nail infection is cured. Prevention is the most important thing. First, avoid excessive cutting of the toenail, especially at the ends of both sides of the toenail. Secondly, avoid digging into the nail grooves with sharp instruments to avoid infection; again, wear loose shoes to avoid squeezing the toes.