DefinitionBy Mayo Clinic Staff
Thunderclap headaches live up to their name, grabbing your attention like a clap of thunder. The pain of these sudden, severe headaches peaks within 60 seconds and can start fading after an hour. Some thunderclap headaches, however, can last for more than a week.
Thunderclap headaches are often a warning sign of potentially life-threatening conditions, usually linked to bleeding in and around the brain. That's why it's so important to seek emergency medical attention if you experience a thunderclap headache.
Some people may also experience thunderclap headaches as part of a potentially recurring headache disorder, known as primary thunderclap headache. But this diagnosis should only be made after a thorough medical evaluation and elimination of other possible underlying causes.
March 25, 2015
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