People don’t think about their toe injuries in their daily life, and they always think that it will heal automatically in a few days. However, after a few days, the skin around it becomes red, swollen and painful before they remember to go to the hospital for treatment. In this case, the patient will most likely be diagnosed with a nail infection or ingrown toenail. If not treated properly, a simple toenail infection can quickly lead to further complications. When the sharp edges of the toenail grow into the folds of skin next to it, it can cause pain and discomfort, especially if the wound becomes infected. Let’s get to know what nail fungus and ingrown toenail syndrome are all about. What are the symptoms of nail infection? The symptoms of common nail infection are: mild pain and redness, swelling, pain, and pressure on one side of the toenail at the beginning, which can subside on its own in mild cases, such as serious infection or poor body resistance, it will septic within 2 to 3 days; then aggravate the septic, pus spreads to the other side or under the nail, forming an abscess under the nail, yellowish-white pus under the nail, separating the deep toenail from the nail bed. On the side of the ingrown toenail, there is often chronic hyperplasia of the fleshy tooth tissue, which makes the wound not heal for a long time. What is ingrown nail disease? Ingrown toenail is a common condition that causes persistent pain in the nail groove caused by repeated infection within the toenail, causing serious problems in the patient’s working life. The majority of ingrown toenails occur in the bunions, especially in the outer part of the bunions, about three times more common than the inner part; some patients suffer from bilateral ingrown toenails or bilateral ingrown toenails in both bunions. Early ingrown nail only shows pain, ingrown nail is very easy to complicate the nail groove tissue infection, clinically known as nail groove inflammation, at this time, the local appear obvious red, swollen, hot, and accompanied by severe pain, septic, local purulent secretions out.