脑动脉硬化是全身动脉硬化的一部分。由于脑内小血管的广泛硬化,引起脑供血障碍和脑的弥漫性改变。临床常见且易与有些疾病相混淆造成诊断方面的错误。诊断从脑动脉硬化症的病理生理过程来看,其主要变化是脑缺血、缺氧,继此而产生的脑代谢障碍和脑组织退行性变。临床早期呈缺血性脑功能障碍综合征;晚期则以缺血性脑实质损害综合征为主。多发生于45岁以后,其临床表现与脑动脉硬化程度、部位及脑组织损害情况有关。一、临床表现: (一)缺血性脑功能障碍综合征:脑动脉硬化 Cerebral arteriosclerosis is a part of systemic arteriosclerosis. Due to the extensive sclerosis of the small blood vessels in the brain, brain dysfunction and diffuse changes in the brain are caused. Common clinical and easy to be confused with some diseases caused by diagnostic errors. Diagnosis From the pathophysiology of cerebral arteriosclerosis process point of view, the main change is cerebral ischemia, hypoxia, followed by the brain metabolism and brain degeneration. Clinical early was ischemic brain dysfunction syndrome; the latter part of the main ischemic brain parenchymal syndrome. Occurred after the age of 45, its clinical manifestations and cerebral atherosclerosis, parts and brain damage related. First, the clinical manifestations: (A) ischemic brain dysfunction syndrome: cerebral arteriosclerosis