Healthdirect Free Australian health advice you can count on.

Medical problem? Call 1800 022 222. If you need urgent medical help, call triple zero immediately

healthdirect Australia is a free service where you can talk to a nurse or doctor who can help you know what to do.

Ultrasound and screenings can be used to detect and monitor aneurysms.

Ultrasound and screenings can be used to detect and monitor aneurysms.
beginning of content

What causes aneurysms?

1-minute read

Aneurysms can be congenital – that is, people can be born with them.

More often, they are due to a gradual weakening of the wall of an artery or vein. This can be due to high blood pressure, or high cholesterol levels, or smoking. An aneurysm can also be caused by an accident or injury that damages the artery or vein such as a head injury.

Aneurysms are more common in some families than others.

They can also occur with certain medical conditions such as polycystic kidney disease and some connective tissue disorders.

Drug abuse (e.g. cocaine abuse) can also cause a brain aneurysm.

Last reviewed: November 2016

Recommended links

Need more information?

These trusted information partners have more on this topic.

Top results


An aneurysm is an abnormal swelling or bulge in the wall of a blood vessel, such as an artery. It begins as a weak spot in the blood vessel wall, which balloons out of shape over time by the force of the pumping blood. Usually, aneurysms develop at the point where a blood vessel branches, because the ‘fork’ is structurally more vulnerable.

Read more on Better Health Channel website

Brain Foundation | Aneurysm

Aneurysm Aneurysm Cerebral Aneurysm, Brain Aneurysm Description Cerebral aneurysm is a common disorder caused by a weakness in the wall of a brain artery

Read more on Brain Foundation website

Aneurysm -

An aneurysm is a swelling that occurs in an artery or vein when its wall is weakened. The greatest danger from an aneurysm is that it may rupture (burst). When a brain aneurysm ruptures and bleeds (haemorrhages), it can cause a stroke. 

Read more on myDr website

Interventional Radiological Treatment of Intracranial (Brain) Aneurysms - InsideRadiology


Read more on InsideRadiology website

Brain Foundation | Subarachnoid Haemorrhage

Subarachnoid Haemorrhage Subarachnoid Haemorrhage Description Subarachnoid Haemorrhage is the sudden leaking (haemorrhage) of a blood vessel over the surface of the brain

Read more on Brain Foundation website

Haemorrhagic stroke Stroke Foundation - Australia

Information about stroke

Read more on Stroke Foundation website

Haemorrhagic stroke information | myVMC

Haemorrhagic stroke occurs when blood leaks into and damages the brain. It typically affects people over 55 years of age who have hypertension.

Read more on myVMC – Virtual Medical Centre website

Stroke - Lab Tests Online AU

Site map of article content

Read more on Lab Tests Online website

Types of stroke | enableme - stroke recovery and support

Find out more about the type of stroke you've had. There is a lot of information, tips and techniques to equip you in your stroke recovery

Read more on Stroke Foundation website

Improving stroke outcomes: Clinical Professor Lesley Cala | myVMC

Symptoms of stroke, prevention and treatment advances, including blood thinning medications and brain scans, are explained by a doctor in this video.

Read more on myVMC – Virtual Medical Centre website

Healthdirect 24hr 7 days a week hotline

24 hour health advice and information you can count on

1800 022 222

Government Accredited with over 140 information partners

We are a government-funded service, providing quality, approved health information

Australian Government, health department logo ACT Government logo New South Wales government, health department logo Northen Territory Government logo Government of South Australia, health department logo Tasmanian government logo Government of Western Australia, health department logo