Snapshot A 76-year-old man presents to the emergency department with increasing somnolence and lethargy. His symptoms developed on the day of admission. His symptoms are associated with a headache with mild nausea but no vomiting. He tripped over a carpet and hit his head on the floor. A head CT without contrast demonstrates a crescent-shaped hyperdensity that crosses the suture lines. Introduction Definition login to view 1 more bullet Epidemiology Risk factors login to view 5 more bullets Pathogenesis Head injury results in tearing of the bridging veins Presentation Symptoms/physical exam login to view 10 more bullets Imaging CT head without contrast login to view 4 more bullets Differential Epidural hematoma login to view 2 more bullets Subarachnoid hemorrhage login to view 3 more bullets Treatment Operative login to view 3 more bullets Complications Brain herniation Seizures Hydrocephalus