Comprehensive Evaluation of Diagnostic and Treatment Strategies for Idiopathic Spinal Subarachnoid Hemorrhage.

Background: Idiopathic spinal subarachnoid hemorrhage (IS-SAH), defined as spinal SAH without apparent cause, is extremely rare. The objective of the present study was to establish a consensus on the diagnosis and management of IS-SAH.

Methods: We enrolled 5 consecutive cases of IS-SAH at our institution, and we enrolled 19 previously published cases as a literature review.