The brain is the decision maker of human behavior, and the health of the brain is very important, but nowadays hydrocephalus is such a frequent problem, is hydrocephalus really water in the brain? Of course not, hydrocephalus is related to cerebrospinal fluid. When the cerebrospinal fluid in the cranial cavity is affected by some disease factors, the absorption and circulation of the cerebrospinal fluid will be impaired, which will cause the enlargement of the ventricular system and the subarachnoid space, forming hydrocephalus. Hydrocephalus is not a simple problem just from its name, and if it is not treated in time, it will cause greater harm. It will cause intellectual disability, which will lead to memory loss and slowing down of the whole person, and in serious cases, it will lead to dementia; hydrocephalus will also lead to mobility disorders, which mainly manifests itself as difficulty in starting, slow and unstable walking, and in serious cases, it will cause hemiplegia and so on; in addition, it will also lead to urinary incontinence and difficulty in urination, and so on. Hydrocephalus can also lead to urinary incontinence and difficulty in urination. Once hydrocephalus occurs, we should pay attention to it, and it is very important to go to a professional hospital to receive treatment in time. At present, hydrocephalus can be treated with medication and surgery, but medication is not very effective and surgery is usually needed to achieve better results. The conventional surgical method is hydrocephalus shunt surgery, which utilizes a shunt tube to shunt excess cerebrospinal fluid from the ventricles of the brain to other parts of the body for absorption. What happens if there is still fluid after a hydrocephalus shunt? If fluid builds up again after a hydrocephalus shunt operation, it is important to have the pressure adjusted and measured. If the adjustment is not effective, the shunt is likely to be clogged, and the shunt will need to be removed and the operation rescheduled if necessary.