The common cause of subarachnoid hemorrhage Is: (A) Aerio-venous malformation, (B) Cavernous angioma, (C) Aneurysm, (D) Hypeension
Answer is C. *Subarachnoid hemorrhage commonly,but exclusively results from rupture of congenital berry aneurysms in the interpeduncular cistern . Subarachnoid haemorrhage, a medical emergency, is usually from a bulging blood vessel that bursts in the brain (aneurysm). It may lead to permanent brain damage or death if not treated promptly Ref Harrison20th edition pg 2567