How is cerebral congestion caused?

The concept of cerebral congestion itself is wrong. There is no concept of cerebral congestion in medicine. Therefore, cerebral congestion may be caused by excessive filling of cerebral blood vessels caused by excessive blood pressure, resulting in a series of symptoms, such as headache, dizziness, and even hypertensive encephalopathy, causing tissue exudation in the brain, showing increased intracranial pressure, showing headache and vomiting, showing papilledema, etc. These are the so-called cerebral congestion in the brain. The causes of a pathological change, of course, the causes of cerebral congestion, are also relatively many. For example, an occlusion of a local cerebral blood vessel causes an excessive congestion of a local blood vessel, while an occlusion of a distal blood vessel is caused by ischemia. Some are also caused by cerebral hemorrhage. These are all causes. Therefore, the concept of cerebral congestion itself is inaccurate. We suggest that patients or doctors find some causes of this congestion. It is caused by hemorrhage, ischemia, hypertension, encephalitis, or brain tumor, brain parasite, encephalitis, etc., all of which can cause a change in so-called cerebral congestion. Moreover, we suggest that related examinations should also be carried out for cerebral congestion, such as brain MRI to confirm whether there are changes in blood vessels. Experts suggest that there is no concept of cerebral congestion in medicine. Cerebral congestion may be caused by excessive blood pressure in the brain, resulting in a series of symptoms, such as headache, dizziness, and even hypertensive encephalopathy, resulting in brain tissue exudation, showing increased intracranial pressure, showing headache, vomiting, papillae edema, etc. These are the so-called cerebral congestion in the brain.