Causes of Hydrocephalus: Understanding Why It Happens

What is Hydrocephalus?

Hydrocephalus is a condition where extra fluid builds up in the brain. This fluid is called cerebrospinal fluid. It can put pressure on the brain and cause health problems. Many people wonder about the causes of hydrocephalus. In this blog, we will focus on what leads to hydrocephalus, who is at risk, and when to seek help.

Main Causes of Hydrocephalus

There are several causes of hydrocephalus. Some people are born with it, while others develop it later. Understanding these causes can help you know what to look out for. Below are the main types:

Congenital Causes (Present at Birth)

  • Brain or spinal cord birth defects
  • Genetic problems
  • Infections during pregnancy (like rubella or mumps)
  • Often, these causes affect babies before they are born. For example, if a mother has an infection during pregnancy, it can lead to hydrocephalus in the baby.

    Acquired Causes (Develop After Birth)

  • Head injuries
  • Brain tumors
  • Bleeding in the brain (often from a stroke or injury)
  • Infections such as meningitis
  • Complications from surgery
  • Sometimes, people develop hydrocephalus after an accident or illness. For instance, a brain infection can block the flow of fluid, causing it to build up.

    Other Types

  • Normal pressure hydrocephalus (often in older adults)
  • Unknown causes (idiopathic hydrocephalus)
  • In some cases, doctors cannot find a clear cause. This is called idiopathic hydrocephalus. However, it is still important to get medical care.

    Risk Factors Associated with Causes

    Some people have a higher risk of developing hydrocephalus. Knowing these risk factors can help you stay alert. Here are some common risk factors:

  • Premature birth
  • Family history of hydrocephalus
  • Infections during pregnancy
  • Serious head injuries
  • Brain tumors or cysts
  • Bleeding in the brain
  • For example, babies born early are more likely to have bleeding in the brain, which can lead to hydrocephalus. Likewise, people with a family history may have a higher chance.

    How Causes Differ by Age Group

    Hydrocephalus can affect people of all ages. However, the causes often differ depending on age. Let’s look at each group:

  • Infants: Birth defects, infections during pregnancy, or bleeding in the brain
  • Children: Head injuries, brain tumors, or infections like meningitis
  • Adults: Head injuries, brain tumors, or complications from surgery
  • Elderly: Normal pressure hydrocephalus, strokes, or unknown causes
  • For instance, older adults may develop normal pressure hydrocephalus, which is different from the causes seen in babies or young children.

    When to Seek Medical Help

    It is important to know when to get help. If you or someone you know has symptoms like severe headache, vomiting, trouble walking, or changes in thinking, seek medical care right away. Early treatment can prevent serious problems. In addition, if a baby’s head seems to grow quickly or looks swollen, see a doctor soon.

    In summary, hydrocephalus has many causes, and they can differ by age. But knowing the risk factors and warning signs can help you act quickly. Consult a neurology specialist at Dr. Sameep Koshti for personalized advice about hydrocephalus.