A brain aneurysm is a bulge in a blood vessel in the brain caused by weakening of the arterial wall. It often looks like a berry hanging on a stem. An aneurysm can leak or rupture, causing bleeding into the brain (hemorrhagic stroke).
Most brain aneurysms, however, don’t rupture, create health problems, or cause symptoms. A ruptured aneurysm, however, quickly becomes life-threatening and requires prompt medical treatment. Such aneurysms are often detected during tests for other conditions.
Brain aneurysms are more prevalent in women than men, particularly in those aged 30–60, with risk doubling post-menopause. Women have a higher likelihood of rupture, often due to lower estrogen levels affecting vessel strength, smaller arterial diameters, and higher blood pressure
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Symptoms of Brain Aneurysm
A sudden, severe headache is the key symptom of a ruptured aneurysm. This headache is often described as the “worst headache” ever experienced.
Common signs and symptoms of a ruptured aneurysm include:
- Sudden severe headache
- Nausea and vomiting
- Stiff neck
- Blurred or double vision
- Sensitivity to light
- Seizure
- A drooping eyelid
- Loss of consciousness
- Confusion
Please seek medical attention promptly if you are experiencing any or all of these symptoms.
Risk Factors
The causes of a brain aneurysm are unknown, but a range of factors may increase your risk, including:
- Genetics/Family History
- Cigarette smoking
- High blood pressure (hypertension)
- Drug abuse, particularly the use of cocaine
- Heavy alcohol consumption
- Age and Gender
- Infections/Trauma
