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
Aneurysmal subarachnoid hemorrhage
Non-aneurysmal subarachnoid hemorrhage
Spontaneous subarachnoid hemorrhage
Traumatic subarachnoid hemorrhage
Traumatic subarachnoid hemorrhage, the most common cause of SAH.