There are two other forms of hydrocephalus which do not fit exactly into the categories mentioned above and primarily affect adults: hydrocephalus ex-vacuo and Normal Pressure Hydrocephalus (NPH). Hydrocephalus ex-vacuo occurs when stroke or traumatic injury cause damage to the brain. In these cases, brain tissue may actually shrink.
Normal pressure hydrocephalus (NPH) is a type of hydrocephalus that usually occurs in older adults. The average age of person with NPH is over age 60. NPH is different than other types of ...
Hydrocephalus types and classification. Hydrocephalus may be congenital or acquired. Congenital hydrocephalus is present at birth and may be caused by either events or influences that occur during fetal development, or genetic abnormalities. Congenital hydrocephalus is now often diagnosed before birth through routine ultrasound.
What Types of Symptoms Are Typical of Adult Hydrocephalus? Symptoms of hydrocephalus in adults vary somewhat depending on the underlying cause. However, in general, common symptoms, regardless of cause, can include headaches, nausea and vomiting, lethargy and somnolence and eventually decline in visual function.
Normal Pressure Hydrocephalus (NPH) This type only affects people ages 50 years or older. It may develop after a stroke or injury. As opposed to other types of hydrocephalus, NPH develops slowly due to the gradual blocking of CSF drainage, which subsequently causes slow fluid buildup over time.
The four types of hydrocephalus are communicating, noncommunicating, ex vacuo, and normal pressure. Diagnosis is typically made by physical examination and medical imaging. Hydrocephalus is typically treated by the surgical placement of a shunt system. A procedure called a third ventriculostomy may be an option in a few people.
Hydrocephalus is a condition, not a disease. It can develop for a variety of reasons, sometimes as part of another condition. Congenital hydrocephalus means the condition is present at birth, caused by a complex interaction of genetic and environmental factors during fetal development. Congenital hydrocephalus is now often diagnosed before birth through routine ultrasound.
Hydrocephalus can occur at any age, but is most common in infants and adults age 60 and older. It affects adult males and females, as well as people of different races, about equally. Experts believe that normal-pressure hydrocephalus accounts for five to six percent of all dementia cases.
In this case, hydrocephalus results from a narrowing of the aqueduct of Sylvius, a small passage between the third and fourth ventricles in the middle of the brain. There are two other forms of hydrocephalus that do not fit exactly into these four categories and primarily affect adults-hydrocephalus ex-vacuo and normal pressure hydrocephalus (NPH).
Hydrocephalus can happen at any age, but it occurs more frequently among infants and adults 60 and over. Surgical treatment for hydrocephalus can restore and maintain normal cerebrospinal fluid levels in the brain. Many different therapies are often required to manage symptoms or functional impairments resulting from hydrocephalus.