A subarachnoid hemorrhage (SAH) results from a medical aneurysmal rupture or traumatic head injury. SAH occurs in the subarachnoid space between the arachnoid membrane and the pia mater that surrounds the brain. Patients typically experience a "thunderclap-like" severe headache; however, only 10% of patients presenting to the emergency department with complaints of a headache end up having a SAH.
Other associated symptoms may include neck pain, nausea/vomiting, and photophobia. This is often a devastating clinical event with substantial mortality and high morbidity among survivors.
Copyright © 2024, StatPearls Publishing LLC.