What symptoms can occur after a subarachnoid hemorrhage caused by a ruptured aneurysm?

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A subarachnoid hemorrhage caused by a ruptured aneurysm is a spontaneous event that requires immediate medical attention. The hallmark symptom is a sudden, severe "thunderclap headache," which patients often describe as feeling as though they were struck on the head with a blunt object.1

Other symptoms and clinical manifestations associated with this condition include:

Nausea1
Seizures1
Loss of consciousness1
Vasospasm, which occurs when blood in the subarachnoid space causes surrounding arteries to spasm, potentially leading to further brain damage1

Because these hemorrhages are often spontaneous and life-threatening, quick intervention is essential to improve the chances of a positive outcome. If you or someone you know experiences a sudden, severe headache of this nature, it is critical to seek emergency medical care immediately.1