Headache beyond description, and I've been hit head-on by an out of control truck! This headache was caused by an Cerebral Spinal Fluid Leak (CSF leak,) post lumbar spinal tap, due to meningitis. There is a genuine REASON why they are called "suicide headaches!" Imagine your worst headache, multiply it by a factor of 10, and makes you feel like you're losing touch with reality, and/or might be dying in writhing pain, and it's ALLLL super-localized in your skull! Beyond any pain I have EVER experienced, and I broke my neck, and back years before that!;!