王菲，女，7岁，学生。头晕目眩、耳鸣、恶心反复发作月余就诊。诉说无任何诱因起病。常感到睁眼时周围景物旋转、晃动或左右移动，闭眼时感觉自身失去平衡。近来症状加重，影响学业。曾去某医院诊治，经头颅CT、脑电图、心电图及血常规检查，均正常。五官科检查已除外中耳炎。 Faye Wong, female, 7 years old, student. Dizzy, tinnitus, nausea repeated episodes of more than treatment. Tell no cause of illness onset. Often feel the eyes open when the surrounding scenery rotation, shaking or moving around, feeling closed when their eyes out of balance. Recently, the symptoms have worsened, affecting their studies. Had to a hospital for treatment, the head CT, EEG, ECG and blood tests, are normal. ENT examination has been excluded otitis media.