Perimesencephalic Subarachnoid Hemorrhage Epidemiology

• Subarachnoid hemorrhage part 1 : Pathophysiology, diagnostics and special forms
• Association of SSRI and SNRI use with incident hyponatremia after subarachnoid hemorrhage
• Risk stratification of delayed causative aneurysm detection and long-term outcome in angiographically negative spontaneous subarachnoid haemorrhage
• Cognitive, Mental Health, Functional, and Quality of Life Outcomes 1 Year After Spontaneous Subarachnoid Hemorrhage: A Prospective Observational Study
• Treatment and outcomes of non-aneurysmal perimesencephalic subarachnoid haemorrhage: A 5 year retrospective study in a tertiary care centre
• Physical exertion as a risk factor for perimesencephalic nonaneurysmal subarachnoid hemorrhage
• Cannabis Use and Increased Nonaneurysmal Subarachnoid Hemorrhage in the Past Decade
• Clinical comparison of patients with angiography: Negative perimesencephalic and nonperimesencephalic subarachnoid hemorrhages

Perimesencephalic subarachnoid hemorrhage is rare with an incidence of 0.5 in 100 000 in adults.

PMSAH represents 5-10% of all subarachnoid haemorrhages and ~33% of all non-aneurysmal SAH.