眩晕 脑动脉粥样硬化 肝阳上亢证 气血不足证 肾精亏虚证 痰湿中阻证 瘀血阻窍证 vertigo cerebral atherosclerosis syndrome of liver yang hyperactivity qi and blood deficiency syndrome of kidney essence deficiency syndrome of phlegm-damp stagnation syndrome of blood stasis blocking the orifices