Subarachnoid Hemorrhage: When a Brain Aneurysm Bleeds

Spontaneous subarachnoid (pronounced sub-uh-RACK-noid) hemorrhage is rightfully the most feared cause of sudden headache. Usually due to rupture of aneurysms (abnormal, balloon-like outpouchings of arteries) located near the base of the brain, subarachnoid hemorrhages involve bleeding into the space between the brain and its surrounding membrane, known as the meninges. A traumatic blow to the … Read more