Does hydrocephalus affect intelligence?

Written by Chen Yu Fei
Neurosurgery
Updated on September 02, 2024
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Mild hydrocephalus generally does not significantly affect intellectual levels, while moderate or severe hydrocephalus often impacts a patient’s intelligence. In children, it can cause severe impairment in intellectual development. For adults, it results in noticeable intellectual deficiencies, primarily characterized by significant cognitive dysfunction, reduced memory, diminished calculating abilities, and weakened verbal communication skills. Additionally, individuals may appear indifferent, speak less, are reluctant to interact with others, and have difficulty expressing themselves. Furthermore, most patients experience reduced orientation abilities concerning time, people, and space, which are predominantly caused by hydrocephalus.

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Written by Chen Yu Fei
Neurosurgery
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Symptoms of hydrocephalus

For patients with hydrocephalus, it often leads to a series of symptoms and signs. For example, patients may experience mild cognitive impairments, manifesting as obvious memory loss, reduced intelligence, and weakened orientation ability in terms of time, space, and person recognition. In addition, most patients also suffer from motor dysfunction, showing symptoms like weakness in one or both legs, difficulty walking, unstable gait, and a tendency to fall. Some patients might even experience changes in emotion and personality. As the condition of cerebral hemorrhage gradually progresses, patients may exhibit symptoms of increased intracranial pressure.

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Written by Jiang Fang Shuai
Neurosurgery
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Causes of hydrocephalus in infants

The occurrence of hydrocephalus in infants involves congenital factors, including poor brain development caused by exposure to medications, radiation, rays, and viral or bacterial infections during the embryonic stage, leading to hydrocephalus. Infant hydrocephalus also includes some acquired factors, such as birth injuries occurring during delivery, and post-birth conditions like inflammation in the brain, tumors, or arachnoid cysts. These conditions can lead to excessive production of cerebrospinal fluid, impaired circulation, or insufficient absorption, resulting in hydrocephalus.

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Neurosurgery
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Is hydrocephalus serious?

Hydrocephalus is relatively serious. When hydrocephalus occurs, it gradually affects the patient's motor functions of the limbs, causing weakness in one or both sides, difficulty in lifting, walking impairments, difficulty performing fine motor actions, and ataxia. It may even lead to frequent falls. Additionally, there are significant cognitive impairments, characterized by reduced intelligence levels, decreased computational abilities, and even certain degrees of language dysfunctions. Patients may also exhibit significant personality changes, such as feelings of anxiety, depression, apathetic expressions, and a dislike for communication and interaction with others.

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Written by Chen Yu Fei
Neurosurgery
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Is hydrocephalus easy to treat?

Hydrocephalus is relatively easy to treat. Before treatment, it is advised to first perform a cranial CT scan or MRI on the patient to determine the type and severity of the hydrocephalus, and based on whether the patient currently shows significant clinical symptoms, decide if surgical treatment is necessary. Additionally, a cranial CT or MRI can help identify the cause of the hydrocephalus, such as whether there is an intracranial space-occupying lesion or if the cerebral fluid circulation pathway is obstructed for other reasons, leading to hydrocephalus. If treatment is deemed necessary, it is generally recommended to opt for ventriculo-peritoneal shunt surgery for the patient. Most patients can achieve good results after the surgical treatment.

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Written by Shu Zhi Qiang
Neurosurgery
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What is hydrocephalus shunt?

Patients with hydrocephalus usually require shunt surgery, among which the most common is the ventriculoperitoneal shunt. The shunt tube used in this surgery typically features a reservoir, often referred to by patients as a "water basket". Patients are frequently required to press this reservoir to promote the excess cerebral spinal fluid to flow through the shunt tube into the abdominal cavity, where it is absorbed by the omentum. If the reservoir is not pressed, the shunt tube may become blocked, potentially requiring the surgery to be performed again.