Presentation
Sudden onset severe headache with nausea and vomiting. No neurological deficits.
Patient Data
Age: 55 years
Gender: Female
From the case:
Nontraumatic subarachnoid hemorrhage
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Axial non-contrast

Small volume right superior frontal lobe subarachnoid hemorrhage. No intra-ventricular or parenchymal hemorrhage present. No evidence of mass effect of midline shift.
Case Discussion
This is a case of non-traumatic spontaneous subarachnoid hemorrhage. There was no CTA evidence of cerebral aneurysm. Vasculitic and coagulation screens negative. Patient was not on blood thinners. Cause remains uncertain. Patient improved with conservative management with no further episodes.