hydrocephalus

Hydrocephalus

Hydrocephalus is a condition in which cerebrospinal fluid (CSF) builds up within and/or around the brain, which can cause pressure to increase in the skull. Symptoms may vary according to age. Headaches and double vision are common. Elderly adults with normal pressure hydrocephalus (NPH) may have poor balance, difficulty controlling urination or mental impairment. In babies, there may be a rapid increase in head size. Other symptoms may include vomiting, sleepiness, seizures, and downward pointing of the eyes. Hydrocephalus can occur due to birth defects (primary) or can develop later in life (secondary). Hydrocephalus can be classified via mechanism into communicating, noncommunicating, ex vacuo, and normal pressure hydrocephalus. Diagnosis is made by physical examination and medical imaging, such as a CT scan. Hydrocephalus is typically treated through surgery. One option is the placement of a shunt system. A procedure called an endoscopic third ventriculostomy has gained popularity in recent decades, and is an option in certain populations. Outcomes are variable, but many people with shunts live normal lives. However, there are many potential complications, including infection or breakage. There is a high risk of shunt failure in children especially. However, without treatment, permanent disability or death may occur. Hydrocephalus affects about 0.1–0.6% of newborns. Rates in the developing world may be higher. Normal pressure hydrocephalus may affect up to 6% of people over 80. Description of hydrocephalus by Hippocrates dates back more than 2,000 years. The word hyd...