Understanding the condition

What Is Hydrocephalus?

Cerebrospinal fluid (CSF) normally circulates around the brain and spinal cord, providing protection and helping maintain a healthy environment for the nervous system.

Hydrocephalus develops when this fluid cannot circulate or be absorbed normally, causing enlargement of the fluid-filled spaces (ventricles) within the brain. In some cases, this increases pressure on the brain and affects neurological function.

Hydrocephalus can occur at any age. It may develop following a brain haemorrhage, tumour, infection, head injury or previous surgery. Sometimes no clear cause is identified.

Normal pressure hydrocephalus (NPH) is a form that occurs mainly in older adults. It usually develops gradually and may affect walking, memory, thinking and bladder control.

Symptoms

Common symptoms of Hydrocephalus

Symptoms depend on the type of hydrocephalus and how quickly it develops.

Hover your cursor over a symptom above to learn more.

When to Seek Urgent Care

Know the Warning Signs

Symptoms of hydrocephalus often develop gradually. However, a sudden or significant deterioration needs medical attention.

Seek urgent medical care if you develop:

  • Severe or rapidly worsening headaches, particularly with repeated vomiting.
  • Unusual drowsiness or increasing confusion.
  • A sudden, marked deterioration in walking or balance.

These symptoms may indicate increased pressure within the brain or another condition requiring urgent assessment.

For emergencies, call 000 or attend your nearest Emergency Department.

Assessment & Imaging

How is it diagnosed?

Hydrocephalus is usually diagnosed using brain imaging, which demonstrates enlargement of the ventricles. Clinical assessment helps determine whether symptoms are related to the hydrocephalus and whether treatment is likely to be beneficial.

Neurological Assessment

Assessment of walking, balance, strength, coordination and other neurological functions.

MRI or CT Scan

MRI or CT may help confirm the diagnosis or investigate significant symptoms.

Walking & Cognitive Assessment

Include walking tests and evaluation of memory, thinking and daily function.

Treatment

Treatment Options

Treatment is based on your symptoms, examination findings, imaging, and how the condition affects your day-to-day life.

Some patients may require observation and ongoing monitoring before treatment is recommended.

Management may include:

  • Repeat imaging
  • Specialist neurosurgical review

The aim of treatment is to restore normal cerebrospinal fluid circulation and reduce pressure on the brain.

Treatment options may include:

Related Services

Associate Professor van Gelder offers specialist assessment, investigation, and treatment of hydrocephalus.

Treatment Procedures

Procedures to treat Hydrocephalus