What causes cerebral congestion?

Cerebral congestion is cerebral hemorrhage. There are many reasons for cerebral hemorrhage. The most important factor is hypertension. On the basis of hypertension and cerebral arteriosclerosis, many microaneurysms can be formed on the penetrating arteries in the brain. When the blood pressure rises suddenly, the microaneurysms rupture and hemorrhage occurs, or due to uncontrolled hypertension for a long time, hyaline degeneration or fibrinoid necrosis occurs in the blood vessels. When the blood pressure or blood flow changes sharply, it is easy to rupture and bleed. In addition, intracranial aneurysms and cerebral vascular malformations, cerebral amyloid angiopathy, intracranial malignant tumors occur brain tumor stroke, various types of blood diseases and certain anticoagulation, antithrombotic, thrombolytic drug therapy, cerebral artery inflammation, can lead to cerebral hemorrhage.