A brain aneurysm is caused by a bulge in a blood vessel, which is caused by a weakness in the blood vessel wall. Blood passing through this weak area then causes a bulge, and these can cause some serious problems if they rupture. Symptoms of a brain aneurysm include a sudden headache, vomiting, a stiff neck and pain caused by light sensitivity. If you think someone has a brain aneurysm, it’s important to call 999 immediately.

Preventing brain aneurysms is crucial, and knowing what causes them could help to save your life. It’s important to avoid habits such as smoking, eating a high-fat diet, not controlling your blood pressure, or being overweight. Try to manage these risk factors as much as possible to reduce your likelihood of suffering a brain aneurysm.