Diseases & Conditions
The worst headache of your life
In some people, sudden, excruciating headache pain could signal a leaking or burst aneurysm.
- Reviewed by Anthony L. Komaroff, MD, Editor in Chief, Harvard Health Letter
A terrible headache, like a migraine, can ruin your day and sideline you from activities. But the "worst headache of your life" is potentially much more dangerous. It's known as a "thunderclap headache" when the pain intensity surges within seconds to minutes. This worrisome symptom can be caused by a brain aneurysm — a weak spot on a brain artery that bulges like a little bubble on a hose.
If that bubble ever leaks or bursts, it causes sudden, severe pain and bleeding that can be life-threatening. It requires an immediate call to 911.
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About the Author
Heidi Godman, Executive Editor, Harvard Health Letter
About the Reviewer
Anthony L. Komaroff, MD, Editor in Chief, Harvard Health Letter
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