Patients who experience a nonaneurysmal subarachnoid hemorrhage differ from patients who suffer an aneurysmal subarachnoid hemorrhage in initial presentation (including neurological examination and computed tomography [CT] scans), clinical course, and outcome. A perimesencephalic distribution of nonaneurysmal subarachnoid blood on CT imaging has been described as a distinct clinical entity with a benign course and an excellent prognosis; research suggests that the majority of these patients have excellent outcomes. In most cases, these patients return to their previous level of functioning. Surviving a subarachnoid hemorrhage can be emotionally devastating to patients and their families and can threaten employment and health insurance eligibility. Using evidence-based practice, neuroscience nurses can reassure and educate patients, staff members, and the public and facilitate their understanding of the clinical course and outcome.