Perimesencephalic nonaneurysmal subarachnoid hemorrhage is a subarachnoid hemorrhage pattern with characteristic hemorrhage and well prognoses. Our case had a doubtful neck stiffness on her neurological examination when patient admitted to our emergency department with severe headache. There was a hemorrhagic appearance around the mesencephalon on computerized brain tomography. No pathologic pattern was seen as a cause on cerebral angiography. She has no complaint excepting headache that seen occasionally. It's important to determine the perimesencephalic hemorrhagic pattern of subarachnoid hemorrhage for unnecessary neuroradiological and surgical interventions.