A ballooning in a blood vessel in the brain is called a brain aneurysm.
🧠 Brain aneurysm
Cerebral aneurysm
It happens when a weak spot in a brain artery wall bulges outward like a balloon due to blood pressure.
📍 Why it forms
- Weak or thin blood vessel wall
- High blood pressure
- Smoking
- Genetic factors
- Age-related vessel weakening
⚠️ Why it’s dangerous
A brain aneurysm can:
- Stay small and silent for years, or
- Rupture (burst), causing bleeding in the brain
A rupture leads to a life-threatening condition called a hemorrhagic stroke.
🚨 Warning signs (if present)
Many aneurysms have no symptoms until they leak or burst, but possible signs include:
- Sudden, severe “worst headache of life”
- Nausea or vomiting
- Blurred or double vision
- Neck stiffness
- Loss of consciousness (in severe cases)
🩺 Treatment options
Depends on size and risk:
- Monitoring (small, stable aneurysms)
- Blood pressure control
- Surgical clipping
- Endovascular coiling (minimally invasive repair)
🧠 Key takeaway
A brain aneurysm is a weak, balloon-like bulge in a brain artery that may be harmless unless it grows or ruptures—but rupture is a medical emergency.
