All strokes are not the same. This type of stroke is caused by a lack of blood flow to the brain. Reduced blood flow may be caused by a narrowing of the arteries to or in the brain by blood clots coming from the heart or other blood vessels. Do not ignore a TIA because they often are a warning that a serious stroke is about to occur. A stroke caused by a problem with a blood vessel within the brain.
Surgery is usually the best treatment.
Nationally, about 25 percent of patients with subarachnoid hemorrhage die, and 50 percent suffer significant permanent impairment. Subarachnoid hemorrhage occurs secondary to a ruptured blood vessel in the brain, other than trauma. A deformity in an artery or vein within the brain.