A Non-traumatic Non-aneurysmal Subarachnoid Hemorrhage in a Mild COVID-19 Infection: A Case Report.

Both subarachnoid hemorrhage and intraparenchymal hemorrhage have been reported in patients with coronavirus disease 2019 (COVID-19) infection. We report a 38-year-old male patient who was initially admitted for alcoholic hepatitis and had a mild COVID-19 infection that was confirmed 10 days prior to presentation. During his hospitalization, he reported worsening of his occipital headache that started when he tested positive for COVID-19. Neurological examination was intact and no history of trauma, hypertension, illicit drug use, or family history of brain aneurysm was reported. Investigating his worsening headache revealed a tiny, right-sided, posterior subarachnoid hemorrhage. No coagulopathy was evident. No aneurysm was seen on the cerebral angiogram. The patient was managed conservatively. This case raises the point of the importance of investigating headaches even in mild COVID-19 infection, as it may herald intracranial bleeding.