What are the warning signs of cerebral edema?

Jan 31, 2023 Source: Cainiu Health
Disease description:

Recently, an elderly family member has been feeling unwell. After going to the hospital, they were diagnosed with cerebral edema. I would like to ask: what are the early warning signs of cerebral edema?

Doctor's answer (1)
Dr. Bai Hongmei
The most prominent feature of cerebral edema is increased intracranial pressure, which directly manifests as severe headache, vomiting (often projectile), papilledema, followed by impaired consciousness and changes in bilateral pupils. If intracranial pressure is not promptly controlled, leading to brain herniation, the bilateral pupils become unequal in size and irregular in shape.