Patients with hydrocephalus may feel a headache, which is the most common symptom of hydrocephalus. Hydrocephalus is a condition in which the cerebrospinal fluid accumulates in the ventricular system due to obstruction of the cerebrospinal fluid circulation pathway or impaired absorption, resulting in the enlargement of the ventricular system and hydrocephalus. Hydrocephalus can lead to increased intracranial pressure, which can pull on the nerves in the dura mater and cause headaches, as well as vomiting, optic nerve papilledema, and other symptoms of increased intracranial pressure. In addition, hydrocephalus can also cause brain atrophy, resulting in neurological dysfunction. Patients may experience unstable walking, decreased muscle strength, slow thinking and reaction, memory loss, incontinence and other symptoms. In severe cases of hydrocephalus, a ventral shunt for hydrocephalus or a fistula at the base of the third ventricle is required to relieve the hydrocephalus and improve the symptoms.