🧠 12 Signs That Could Signal a Brain Aneurysm — When to Seek Emergency Care


A brain aneurysm is a weak spot in a blood vessel that balloons out and can burst, causing a life-threatening type of stroke called subarachnoid hemorrhage.

While many aneurysms go unnoticed (especially if unruptured), a ruptured aneurysm is a medical emergency — and it often comes with sudden, unmistakable symptoms.

The key isn’t to fear every headache. It’s to recognize the warning signs of a rupture — so you or someone you love can get help in time.

Let’s explore the real signs of a brain aneurysm — especially the critical ones that demand immediate action.

Because real awareness isn’t about scaring you. It’s about saving lives through fast recognition.


🔍 What Is a Brain Aneurysm?

A brain (cerebral) aneurysm is a bulge in a brain artery wall — like a balloon forming on a garden hose.

Unruptured aneurysm
May cause no symptoms; often found during imaging for other reasons
Ruptured aneurysm
Bleeds into the brain — causes a stroke and requires emergency treatment

🩺 Ruptures are rare but deadly: About 30–40% of cases are fatal within the first 24 hours. Survivors often face long recovery.

That’s why knowing the signs matters.


⚠️ The #1 Sign of a Ruptured Aneurysm

1. "Thunderclap" Headache