Table of Contents

Subarachnoid hemorrhage classification

Subarachnoid hemorrhage (SAH) has long been classified into two main forms, Aneurysmal subarachnoid hemorrhage (aSAH) and Non-aneurysmal subarachnoid hemorrhage, but the related risk factors for aSAH and naSAH are heterogeneous.

Angiographically negative subarachnoid hemorrhage

Angiographically negative subarachnoid hemorrhage

Aneurysmal subarachnoid hemorrhage

Aneurysmal subarachnoid hemorrhage.

Non-aneurysmal subarachnoid hemorrhage

Non-aneurysmal subarachnoid hemorrhage.

Spontaneous subarachnoid hemorrhage

Spontaneous subarachnoid hemorrhage.

Traumatic subarachnoid hemorrhage

Traumatic subarachnoid hemorrhage, the most common cause of SAH.

Spinal subarachnoid hemorrhage

Spinal subarachnoid hemorrhage.