患男,13岁,以“行走时步态不稳伴左侧口角歪斜3月”主诉入院。3月前无明显原因出现行走时步态不稳,左侧口角歪斜,头晕尤以活动和仰卧位时明显,吐字不清。 查体:神清,双眼瞳孔等大等圆2.5mm,光反射灵敏,左眼外展不能,双眼向左侧凝视障碍,辐凑运动正常,左侧鼻唇沟变浅,伸舌左偏,左侧面部痛觉减退,右 Suffering from male, 13 years old, “walking gait instability with skew on the left side of the mouth,” the main complaint was admitted. 3 months ago, there was no obvious reason for walking gait instability, skew on the left side of the mouth, dizziness, especially when the activity and supine position clearly, articulation unclear. Physical examination: God clear eyes and other large round 2.5mm pupil, light reflection sensitive left eye abduction can not, both eyes to the left gaze disorders, convergence movement normal, shallow left nasolabial fold, extensor left side, Left facial pain relief, right