Hydrocephalus, at first glance, sounds like the brain is really in the water? Of course not, hydrocephalus is closely related to cerebrospinal fluid (CSF), which is a colorless and transparent fluid that is quantitatively present in the brain and spinal cord. When certain disease factors or craniocerebral trauma exist, it may lead to obstacles in the absorption and circulation of CSF, and hydrocephalus will be formed when the amount of cerebrospinal fluid keeps accumulating. Hydrocephalus does not only occur in children, but also in some adults. The main symptoms of hydrocephalus in children are slow reaction, indifference, mental retardation, and so on, and in severe cases, it may lead to dementia. Hydrocephalus in adults is also very harmful, patients will often feel headache, nausea, visual impairment and motor dysfunction, and if hydrocephalus also compresses the brain stem, it will cause respiratory difficulties, which will lead to coma, and even life-threatening. It can be seen that no matter which age group suffers from hydrocephalus, its harm is very great, so it should be actively and effectively treated. At present, the main treatment for hydrocephalus is surgery, and the conventional surgery is hydrocephalus shunt, but the failure rate of this conventional surgery is very high, and the incidence of postoperative complications is very high, and there will be infections, blockage of tubes and other problems. What if the hydrocephalus infection is serious will it affect life expectancy? Infections after hydrocephalus surgery should not be taken lightly and can be life-threatening if not treated and controlled in a timely manner.