<prompt> Most common cause of subarachnoid hemorrhage is:HypertensionBerry aneurysmIntracranial tumorsArterio-venous malformations AVM  <response>: Ans. is b Berry aneurysm Reference Harrison 17e p 1726-1728 16e page 2390, 2388 15the page 23881Actually head trauma is the most common cause of subarachnoid hemorrhage.Rupture of berry Saccular aneurysm is the 2nd most common cause of subarachnoid hemorrhage, but among the given options it is the most common. 