Topic: anisocoria

Non-traumatic acute subdural hematomas are a rare occurrence. Etiologies typically include, but are not limited to, cortical artery bleeding, vascular lesions, coagulopathies and spontaneous intracranial hypotension. A forty-five (45)-year old Korean male with no known comorbidities nor history of head or neck trauma consulted the emergency department due to a ten (10)-day history of dizziness and head heaviness and a two (2)-day history of increasing drowsiness and disorientation. The cranial MRI showed a hyperacute to acute subdural hemorrhage along both cerebral convexities, tentorium, and