What You Need to Know About Brain Aneurysms
Brain aneurysms are often called the “silent killer”and for good reason. These balloon-like bulges in brain arteries can grow undetected, causing no symptoms until they rupture, leading to life-threatening emergencies.
What Is a Brain Aneurysm?
A brain aneurysm, or cerebral aneurysm, is a weak spot in the wall of a blood vessel in the brain. Over time, this area can bulge outward like a small balloon, sometimes resembling a berry on a stem.
Aneurysms can form anywhere in the brain but are most commonly found in the Circle of Willis the network of arteries at the base of the brain. They vary in size, from tiny (under 5mm) to giant (over 25mm), and both size and location influence the risk of rupture.
Fast Facts:
- Most aneurysms don’t rupture or cause symptoms.
- They’re often found incidentally during imaging for other conditions.
- Ruptures are medical emergencies and can lead to hemorrhagic strokes.
- Aneurysms are more common in adults, particularly women.
Why They’re Called the “Silent Killer”
Because brain aneurysms usually don’t cause symptoms until they rupture, many people don’t know they have one. When a rupture occurs, blood leaks into the brain, causing a subarachnoid hemorrhage a serious and potentially fatal condition.
Warning signs of a rupture include:
- Sudden, severe headache (“the worst headache of my life”)
- Nausea or vomiting
- Stiff neck
- Vision problems
- Seizures
- Loss of consciousness
Immediate medical attention is critical. A ruptured aneurysm requires emergency treatment to prevent long-term damage or death.
Symptoms of an Unruptured Aneurysm
While many unruptured aneurysms are silent, some may cause symptoms if they press on nearby nerves or brain tissue.
Possible signs include:
- Pain above or behind the eye
- Dilated pupils
- Blurred or double vision
- Facial numbness or weakness
If you notice any of these, don’t wait seek medical attention right away.
Risk Factors: What Raises Your Risk?
Uncontrollable Risk Factors:
- Age (more common after 40)
- Female gender
- Family history of aneurysms
Controllable Risk Factors:
- Smoking
- High blood pressure
- Drug use (especially cocaine or amphetamines)
While you can’t change your age or genetics, managing blood pressure, quitting smoking, and living a healthy lifestyle can reduce your risk.
How Aneurysms Are Diagnosed
If an aneurysm is suspected, doctors may use imaging tests like:
- CT scan
- MRI
- Cerebral angiography
These provide detailed images of blood vessels and help determine the size, shape, and location of the aneurysm.
Treatment Options
Treatment depends on the aneurysm’s size, location, and rupture status as well as the patient’s health.
Options may include:
- Observation: Small, unruptured aneurysms may be monitored over time.
- Surgical clipping: A small metal clip seals off the aneurysm.
- Endovascular coiling: A catheter inserts coils to promote clotting inside the aneurysm.
Each approach has risks and benefits. A care team can help decide the best plan.
Living With a Brain Aneurysm
If you’re living with an aneurysm, regular monitoring and managing your risk factors are key. Stay connected with your healthcare provider and consider joining support groups for emotional and practical support.
Why Awareness Matters
Raising awareness saves lives. Understanding the risks and symptoms of brain aneurysms can lead to earlier diagnoses, better outcomes, and stronger support for ongoing research and treatment innovations.
