Headache is a very common presenting complaint in emergency medicine, and most patients have a benign cause. (Davenport 2002) However, approximately 1% of patients will be diagnosed with a subarachnoid hemorrhage. (Goldstein 2016; Carpenter 2016) Subarachnoid hemorrhage has a high mortality, with 25% of patients dying within 24 hours and up to 50% dying within … Continue reading Subarachnoid Hemorrhage: What is the role of LP?