Warning Headache 20 - 50% patients with SAH have HA days or weeks before index episode. unusually severe.
{"Image DocumentName": "Warning Headache % patients with SAH have HA days or weeks before index episode. unusually severe.", "Image ImageDescription": "distinct. Thunderclap headache. Day and Raskin intense, acute, peak intensity at onset. develop in seconds. maximal intensity in minutes. lasts hours to days.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}