What causes Subarachnoid Hemorrhage?
Subarachnoid Hemorrhage can be traumatic but is commonly caused by a ruptured berry aneurysm.
Hypertension, larger size (especially >7 mm), and posterior circulation location are associated with aneurysm rupture.
Hypertension and smoking contribute to aneurysm growth.
Polycystic kidney disease and inherited connective tissue defects are also associated with intracranial aneurysms.