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Non-Aneurysmal Subarachnoid Hemorrhage in COVID-19: A Case Report and Review of Literature.

Background
Hemorrhagic cerebrovascular events, either due to aneurysmal rupture or spontaneous subarachnoid hemorrhage (SAH), are not rare in COVID-19. Several mechanisms such as coagulopathy, cytokine storm, viral endotheliopathy, hypertension, and immune modulation might play a role in the pathogenesis of SAH in COVID-19. This study aimed to report the first case of spontaneous non-aneurysmal SAH associated with SARS-CoV-2 from India. We briefly discussed the possible pathogenetic mechanisms underlying this process and succinctly reviewed the relevant literature.


Case report
We herein report a case of a non-comorbid young woman infected with SARS-CoV-2 presenting with thunderclap headache and eventually non-aneurysmal SAH, who recovered with conservative management.


Conclusion
Headache, although a very common clinical feature of COVID-19 itself, must be investigated in detail to identify alternate causes that may be life-threatening. This case also incites further enquiry into the possible pathogenic mechanisms of neurovascular complications in COVID-19.