non-aneurysmal perimesencephalic subarachnoid hemorrhage in a covid-19 patient: case report and review on subarachnoid hemorrhage patterns in covid-19

Background and importance: the novel sars-cov-2 virus has had an undeniable effect worldwide in different aspects. although cerebrovascular diseases, especially subarachnoid hemorrhage (sah), have already been reported in covid-19 patients, little is known about various types and patterns of sah in these patients. case presantation: a 63-year-old woman was admitted to the emergency department with a headache. her headache was severe (hunt and hess score, grade 2). she was diagnosed with covid-19 by a positive nasopharyngeal swab pcr test. her ct scan revealed a perimesencephalic hemorrhage, thick sah without any signs of hydrocephalus or intraventricular hemorrhage. conclusion: regarding the different associations of sah with covid-19, the perimesencephalic hemorrhage in our case is a novel type. although not uncommon among non-infected populations, sah occurrence in covid-19 patients has not been reported before and needs further investigation.