Which symptom could indicate impending cerebral herniation?

Severe headaches can be a significant indicator of impending cerebral herniation. This condition occurs when there is increased intracranial pressure, leading to the displacement of brain tissue. A severe headache in this context often results from the pressure exerted on the brain structures that can happen due to swelling or mass effect, whether from a bleed, tumor, or other injury. This kind of headache is typically described as sudden, intense, or unlike any previous headaches experienced by the patient.

Identifying severe headaches in a patient is crucial, as it may signal that urgent medical intervention is necessary to prevent further brain injury or complications associated with herniation. Recognition of such symptoms allows for timely measures to be taken, potentially saving the patient's life and preserving neurological function.