Blown pupil (third nerve palsy, compression from uncus into tentorium cerebelli
Hemiparesis/babinski (75% contralateral)
Pinpoint → nonresponsive midpoint pupils
Motor weakness  → increased tone  → flexor, then extensor posturing
Pinpoint pupils
Sudden respiratory and cardiovascular collapse
Flaccid quadriplegia
Pinpoint pupils
Downward conjugate gaze
Cingulate gyrus most commonly affected
Often clinically silent
Brain herniation syndromes
Cerebral edema in brain cancer
Subdural empyema
Deep brain stimulator complications
Epidural hemorrhage
Subdural hemorrhage
Ventriculoperitoneal shunt complications
Ventriculoperitoneal shunt overdrainage