Medicine Commonest cause of subarachnoid haemorrhage is: A Rupture of circle of Willis aneurysm B Rupture or veebral aery aneurysm C Rupture of venecomitants of corpus striatum D Rupture of dural sinusis 💡 Explanation Commonest cause of subarachnoid haemorrhage is: ✓ Correct Answer: A. Rupture of circle of Willis aneurysm