Division of Neurosurgery   
Phone: 217-545-8000
FAX: 217-545-0253 
Email: neurosurgery@siumed.edu 
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Subarachnoid Hemorrhage

When a brain aneurysm ruptures, it causes bleeding into the compartment surrounding the brain, the subarachnoid space and is therefore also known as a subarachnoid hemorrhage (SAH). Often the aneurysm heals over, bleeding stops, and the person survives. In more serious cases, the bleeding may cause brain damage with paralysis or coma. In the most severe cases, the bleeding leads to death.