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Nontraumatic Subarachnoid Hemorrhagea 

Nontraumatic Subarachnoid Hemorrhagea
Nontraumatic Subarachnoid Hemorrhagea

Jennifer E. Fugate

and Eelco F. M. Wijdicks

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date: 26 July 2021

Subarachnoid hemorrhage (SAH) is defined as introduction of blood in the subarachnoid space. Trauma is the most common cause of SAH. The most common cause of nontraumatic SAH is aneurysm, typically located around the circle of Willis. Attention should be focused on finding a potential aneurysm, but several other conditions can cause SAH.

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