Intracranial Corkscrew Angiopathy

ObjectivesThe objective of this case report was to describe a rare presentation of corkscrew cerebral angiopathy presenting as subarachnoid hemorrhage (SAH).MethodsWe present a young woman who presented with a thunderclap headache, found to have a nonaneurysmal SAH.ResultsCerebral angiogram revealed corkscrew angiopathy in medium-sized vessels and multiple micro-occlusions with collateralization. No intracranial aneurysm was detected. Extensive workup for vasculitis and genetic causes for vasculopathy was unrevealing. The patient had no neurologic deficits, and her symptoms resolved.DiscussionThis is an extremely rare presentation of subarachnoid hemorrhage due to corkscrew angiopathy.