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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.
A spinal headache, also known as a postdural puncture headache, is a complication of needle insertion into the subarachnoid space through the dural sac. The dural sac encases the spinal cord and cerebrospinal fluid. This is a pressurized system that extends from the intracranial cavity down to the sacrum.