The brain controls all activities of the body, and if there is a problem with the brain, it will be much more serious than a problem with any other part of the body. Hydrocephalus is one of the more prevalent ones today. Hydrocephalus is formed in relation to the cerebrospinal fluid and it is not a single disease, it is the result of a pathology caused by several factors. Why is that? Because there is a quantitative amount of cerebrospinal fluid in the human brain, and when certain craniosynostosis is present, it leads to impaired cerebrospinal fluid circulation and absorption, and the amount of cerebrospinal fluid increases, causing the ventricular system or subarachnoid space to expand, resulting in hydrocephalus. The early symptoms of hydrocephalus are headache, dizziness, and nausea, and many patients do not pay much attention to them, thinking that they will get better after resting. But as a result, the symptoms become more and more serious, and the disease continues to develop, bringing greater harm to themselves. Therefore, once hydrocephalus is formed, you should actively seek medical attention, and the principle of hydrocephalus treatment is based on surgery. What will happen if severe hydrocephalus is not operated in time? If hydrocephalus is not operated, the hydrocephalus will continue to worsen, which will lead to the decline of intellectual level, cognitive dysfunction and motor dysfunction. If it continues to progress, it can lead to increased intracranial pressure and brain herniation, which can endanger the patient’s life.