What are the precursor signs of brain herniation

Brain hernia is a very serious clinical crisis in neurosurgery, and its precursor symptoms often include increased intracranial pressure, pupillary changes, changes in vital signs, impaired consciousness, and pyramidal tract signs.
1. Increased intracranial pressure: mainly manifested as severe headache, projectile vomiting, a few patients may have optic papilla edema.
2. Pupil changes: the pupil is narrowed in the early stage and dilated with the progress of the disease.
3. Changes in vital signs: mild increase in blood pressure, decrease in respiration and heart rate.
4. Impaired consciousness: progressive impairment of consciousness can be seen: the patient’s level of consciousness will continue to decline with the prolongation of time.
5. Pyramidal sign: the muscle strength of the upper and lower signs on the opposite side of the brain lesion can be seen to rise, and pathological signs such as Babinski’s sign are positive.
Brain herniation as a very dangerous clinical crisis, mortality is very high, once found aura manifestations, please consult a doctor immediately.