患者男,20岁,因头晕、复视、四肢麻木2d而来院。既往健康,来诊前10d有上呼吸道感染病史。入院后查体:体温36℃、脉搏78次/min、呼吸16次/min、血压120/80mm Hg,神志清楚,言语清楚,呼吸平稳,双眼外展均受限,右眼内收受限,双侧瞳孔等大同圆,双侧瞳孔直径约3.0mm左右,对光反射灵敏 Male patient, 20 years old, because of dizziness, diplopia, limb numbness 2d and come to hospital. Past health, before going to the clinic 10d have a history of upper respiratory tract infection. After admission, physical examination: body temperature 36 ℃, pulse 78 beats / min, breathing 16 beats / min, blood pressure 120 / 80mm Hg, conscious, clear speech, breathing stable, bilateral eye abduction are limited, Pupils and other bilateral Datong round, bilateral pupil diameter of about 3.0mm, sensitive to light reflection