12 Signs That May Signal a Brain Aneurysm — Don’t Ignore Them

A brain aneurysm occurs when a weak area in a blood vessel wall begins to bulge or balloon. In some cases, aneurysms may remain unnoticed for years without causing symptoms. But if the aneurysm leaks or ruptures, it can become a life-threatening medical emergency.

Health experts warn that recognizing early warning signs may help people seek treatment before serious complications occur.

What Is a Brain Aneurysm?

A brain aneurysm develops when part of an artery in the brain weakens and expands. Small aneurysms may never cause problems, but larger ones can press against nearby nerves and tissues.

If the aneurysm ruptures, bleeding inside the brain can occur suddenly and may lead to stroke, permanent brain damage, or death.

1. Sudden Severe Headache

Doctors say one of the most common symptoms of a ruptured aneurysm is a sudden, extremely intense headache often described as:

• “The worst headache of my life”
• Sharp and explosive pain
• Sudden onset without warning

This symptom requires immediate emergency medical attention.

2. Blurred or Double Vision

An enlarging aneurysm may press against nerves connected to the eyes, causing:

• Blurred vision
• Double vision
• Difficulty focusing
• Eye pain

3. Pain Behind or Above the Eye

Some people experience persistent pain around one eye or behind the eye due to pressure on nearby nerves.

4. Numbness or Weakness

Weakness or numbness on one side of the face or body may sometimes occur if the aneurysm affects nerve function.

5. Drooping Eyelid

A drooping eyelid can be an important neurological warning sign linked to pressure from a growing aneurysm.

6. Sensitivity to Light

Photophobia, or extreme sensitivity to light, may occur together with headaches or eye pain.

7. Neck Pain or Stiffness

Bleeding around the brain may irritate surrounding tissues and lead to severe neck stiffness or pain.

8. Nausea and Vomiting

Sudden nausea and vomiting accompanying severe headache can sometimes signal bleeding in the brain.

9. Difficulty Speaking

Aneurysms affecting certain brain areas may interfere with speech or communication abilities.

10. Loss of Balance

Dizziness, difficulty walking, or poor coordination may also occur in some cases.

11. Confusion or Difficulty Concentrating

Changes in mental status, confusion, or unusual drowsiness should never be ignored.

12. Seizures or Loss of Consciousness

In severe cases, ruptured aneurysms may trigger seizures or sudden loss of consciousness — both considered medical emergencies.

Risk Factors Doctors Warn About

Experts say several factors may increase the risk of brain aneurysms, including:

• High blood pressure
• Smoking
• Family history
• Heavy alcohol use
• Age
• Certain genetic conditions

When to Seek Emergency Help

Doctors emphasize that sudden neurological symptoms should never be ignored. Immediate medical attention is critical if symptoms such as severe headache, confusion, weakness, or vision changes appear suddenly.

Early diagnosis and treatment may greatly improve survival and reduce the risk of long-term complications.