眩晕,恶心、耳鸣和平衡失调(身体失去平衡)等症状发作性地出现,每次持续时间为30分钟至数小时,治好了还复发,时好时犯.本病与动脉硬化不同,发作时脉搏和心脏状态与平时一样,血压还多半偏低。并且也不出现神志不清.过去人们认为本病是由于内耳血管异常而引起的,但是后来逐渐认识到由于其他种种原因亦可发生,目前 Dizziness, nausea, tinnitus and balance disorders (body loss of balance) and other symptoms occur, each duration of 30 minutes to several hours, cured also recurrence, when good time to commit. The disease is different from atherosclerosis, attack When the pulse and heart state as usual, blood pressure is still mostly low. And did not appear unconscious.In the past people think that the disease is due to abnormalities caused by the inner ear, but later gradually realized that due to other reasons can occur, the current