<prompt> Most common cause of nontraumatic intracerebral hemorrhage is -HypertensionCerebral amyloid angiopathyAnticoagulant therapyRupture of aneurysm  <response>: Ans. is a i.e., Hypertension Intracranial hemorrhage is defined as the pathologic distribution of blood within the calvaria. It is subdivided into intra-axial intracerebral and extra-axial hemorrhage. Extra-axial hemorrhage includes blood into epidural, subdural and subarachnoid spaces. Intra- axial hemorrhage includes blood into the intraparenchymal or intraventricular spaces. Intracranial hemorrhage is believed to occur in 10 - 30 of all strokes and is predominantly intraparenchymal in such cases. Hypertension is the most common cause underlying most nontraumatic intracerebral hemorrhage 50 - 60. Cerebral amyloid angiopathy is the second most common cause of nontruamatic intraparenchymal hemorrhage and is responsible for 10 - 12 of all hemorrhagic strokes. 