Understanding Brain Aneurysms
A simple guide to brain aneurysms — what they are, warning signs, and treatment options.
What is a Brain Aneurysm?
A brain aneurysm is a weak spot in a blood vessel wall in your brain that balloons out like a small bubble. Think of it like a weak spot on a tyre that can bulge outward. Most aneurysms are small and never cause problems. However, if an aneurysm grows large or ruptures (bursts), it causes bleeding in the brain — a life-threatening emergency called subarachnoid hemorrhage.
Who is at Risk?
Brain aneurysms can happen to anyone, but certain factors increase risk: family history of aneurysms, high blood pressure (the biggest risk factor), smoking, age over 40, and certain genetic conditions. Women are slightly more prone than men. Having one or two risk factors does not mean you will definitely develop an aneurysm, but managing these risks is important.
Warning Signs
Most unruptured aneurysms have no symptoms and are found by accident on brain scans. However, a ruptured aneurysm causes a sudden, extremely severe headache — often described as 'the worst headache of my life.' This may be accompanied by neck stiffness, vomiting, sensitivity to light, seizures, or loss of consciousness. A 'sentinel headache' (sudden severe headache that resolves) may warn of an impending rupture — always seek medical attention.
How Are Aneurysms Treated?
Small, unruptured aneurysms may simply be monitored with regular scans. Larger or higher-risk aneurysms can be treated two ways: Endovascular coiling (a catheter-based procedure where platinum coils are placed inside the aneurysm to seal it — this is what Dr. Hilal specializes in), or surgical clipping (an open operation to place a metal clip across the aneurysm). Coiling is less invasive with faster recovery and is the preferred approach for many aneurysm types.
Key Takeaways
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A brain aneurysm is a weak bulge in a blood vessel — most are harmless
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Ruptured aneurysms cause sudden severe headache — a medical emergency
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High blood pressure and smoking are the biggest controllable risk factors
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Modern coiling procedures can treat aneurysms without open brain surgery
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Regular monitoring of known aneurysms is important
When to See a Doctor
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Sudden, severe headache unlike anything you have experienced before
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Family history of brain aneurysms and you have high blood pressure
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Previous headache that was sudden and severe but went away
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Known aneurysm that is growing on follow-up scans
Need Expert Advice?
Consult with our neurological specialists for personalised guidance.