Lumbosacral skin abnormalities are very common in the population, some people may be born with a mole in the lumbosacral area, some people may have small skin pits near the tailbone, and some people may have bilateral buttocks asymmetry, in the clinic, there are often many patients to consult this aspect of the problem, while some parents do not care about it, today, talk to you about why you should seek medical attention for lumbosacral skin abnormalities. Lumbosacral skin abnormalities are often a sign of abnormal development of the neural tube. On the 15th to 17th day of embryonic development, the nervous system begins to develop, and on the 22nd day of embryonic development, the two sides of the neural fold begin to close to each other, forming a tube called the neural tube. Inadequate closure of the posterior foramen of the neural tube is the most common. Inadequate closure of the neural tube leads to defects in the mesoderm and disorders in the development of each embryonic layer, which can result in skin abnormalities in the lumbosacral region, mainly manifesting as skin masses, hyperpigmentation, hair growth and small concavities. Some time ago, a patient’s parents brought their child to the clinic, and the process of medical treatment was quite tortuous. The child was seen in the orthopedic department of a famous hospital in China because of the asymmetry of the skin pattern of the lower limbs, and several specialists were consulted several times, but no cause was found. A single glance is enough to detect the problem. If newborns are found to have skin abnormalities in the lumbosacral region after birth, including abnormalities such as long packs on the back, skin depressions, hair growth, local color changes and bilateral buttock asymmetry, it is recommended that parents pay attention to this and must visit a regular institution specialized in the treatment of cremasteric tethering to clarify whether cremasteric tethering exists, so as to achieve correct early diagnosis and treatment, so as not to delay the disease and lead to an irreversible situation. We hope that after reading this article, you can forward it or inform more people so that more families can embrace health and the flowers of our country can grow strong.