. . "The symptoms of stroke can be sudden and severe: headache which occurs when the person is lying flat and headaches that wake the person from sleep. ???The worst headache of your life is an ominous sign for a possible type of bleeding stroke called SAH. SAH is Subarachnoid Hemmoraghe, the type of bleeding that occurs when an aneurysm bursts,??? says Dr. Turkel-Parrella." . .