Aneurysmal subarachnoid hemorrhage (aSAH) is a type of stroke that occurs when there is bleeding in the space surrounding the brain, called the subarachnoid space, usually as a result of a ruptured brain aneurysm. A brain aneurysm is a weakened area in the wall of a blood vessel in the brain that can bulge and potentially rupture.
The symptoms of aSAH can include a sudden and severe headache, nausea and vomiting, neck stiffness or pain, loss of consciousness, and seizures. In some cases, there may be no symptoms until the aneurysm ruptures, and the bleeding can be life-threatening.
Treatment for aSAH usually involves stopping the bleeding and preventing complications. This may involve surgery to clip or coil the ruptured aneurysm or medication to control blood pressure and prevent complications such as seizures or cerebral vasospasm (narrowing of blood vessels in the brain).
The prognosis for aSAH depends on several factors, such as the size and location of the aneurysm, the amount of bleeding, and the patient’s overall health. Even with treatment, aSAH can be a serious and potentially life-threatening condition, and prompt medical attention is essential for the best outcomes. After treatment, rehabilitation may be necessary to help patients regain function and prevent future complications.