Why do we need carbs? Why do we need to eat carbs? Importance of carbohydrates. Energy foods
By 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.
Subscribe to our Pain Management Advisor e-newsletter for tips to manage pain. Some thunderclap headaches appear as a result of no obvious physical reason. In other cases, potentially life-threatening conditions may be responsible, including: 1  Bleeding between the brain and membranes covering the brain, often due to an abnormal bulge or ballooning in a blood vessel (aneurysm). 2  A rupture of a blood vessel in the brain.