A Subarachnoid Hemorrhage is the bleeding in the subarachnoid space of the brain. This is a tissue area that surrounds the brain, resulting in Stroke symptoms i.e., brain damage.
A sudden onset of the "worst headache" of the person's life. Often described as a "thunder-clap"
If the CAT scan is normal, but Subarachnoid Hemorrhage is suspected, then a lumbar puncture (spinal tap) is performed and examined for blood or xanthochromia.
Cerebral Angiogram, where a dye is injected and X-Rays of the blood vessels in the brain are taken, may be necessary to find the site of bleeding (e.g., a ruptured aneurysm).
MR Angiogram may be considered, but it is not as accurate as a Cerebral Angiogram
Supportive measures such as strict bed rest and avoidance of straining in any way (even for a bowel movement)
Treat severe Hypertension, but do not lower the diastolic blood pressure (the lower number) below 100 mm Hg.
Dilantin (Phenytoin) is often prescribed for seizure prevention.
Surgical intervention, e.g., the repair of a ruptured Cerebral Aneurysm or arteriovenous malformation if the patient can be stabilized.
The patient needs immediate emergency medical treatment.
