眩晕是空间定位紊乱所呈现的运动性或位置性错觉[1],常感觉外景与自身发生相对运动,如旋转或翻滚等错觉。此时常感座椅或卧床随身体旋转翻滚,患者难以凭扶持外物保持平衡,如仍保持站立姿势,则会跌倒。同时多伴冷汗、苍白、恶心和呕吐等不适,引起患者较大的痛苦和惊慌。眩晕 Vertigo is a locomotor or positional illusion manifested by disordered spatial positioning [1], and often senses the relative movement of the scene and itself, such as the illusion of rotation or tumbling. At this moment, the chair or bed-bound body is often tumbling, and it is difficult for the patient to maintain balance by supporting foreign objects. If the user remains in a standing position, he or she will fall down. At the same time more with cold sweat, pale, nausea and vomiting and other discomfort, causing greater pain and panic in patients. dizziness