Assignment task: ID/CC A 19 year old female Olympic horseback rider is brought into the emergency room with headache, confusion, weakness of the left side of her body, blurring of vision, and projectile vomiting. HPI Three hours ago, she hit the right side of her head when she fell from a horse during a training exercise. She lost consciousness for one minute and then appeared to have recovered completely before presenting with the above Sx. PE VS: BP mildly elevated; bradycardia, papilledema; right-sided mydriasis; deviation of right eyeball outward and downward; left-sided weakness; brisk reflexes on left side; positive Babinski on left side.
What is the Diagnosis? (Please be specific)