Fingernail ingrowing into the flesh of the finger and embedded in the flesh. Most of the time, the nail is embedded in the flesh of the nail and repeatedly infects the nail, causing persistent pain in the nail groove, which is a serious problem for the patient’s working life. Differential diagnosis of nail embedded in flesh: ingrown nail disease can be accompanied by nail sulcus, perineuritis, paronychial granuloma, and can also cause chronic osteomyelitis, fungal infection, etc. Soft nail: lack of energy; hard and easily broken nail: possible anemia; brittle nail: endocrine abnormalities; buckled nail: parasites in the duodenum; nail growing into the flesh of the finger and embedded in the flesh, infection and ulceration of the skin immediately adjacent to the nail.