What is a sub arachnoid aneurysm?

A subarachnoid aneurysm is a bulging, weakened area in a blood vessel of the brain that occurs in the subarachnoid space, which is the area between the brain and the tissues covering it. This type of aneurysm can rupture, leading to subarachnoid hemorrhage—a serious condition characterized by bleeding in the brain that can cause severe headaches, loss of consciousness, and neurological deficits. Prompt diagnosis and treatment are crucial to manage the risks associated with a ruptured aneurysm.