单一外展神经麻痹可见于糖尿病、炎症、血管病、外伤、肿瘤或肌病,罕见于多发性硬化(MS)。以单一外展神经麻痹为临床表现的MS尚未见报告,现将我科收治的1例报告如下。患者女,22岁。病人3年前无明显诱因出现左外展神经麻痹,持续1个月自愈,数月后复发,在眼科手术治疗。20余天前出现右外展神经麻痹,无感染史,无头痛或面部感觉异 Single abducens nerve paralysis can be seen in diabetes, inflammation, vascular disease, trauma, cancer or myopathy, rare in multiple sclerosis (MS). A single outbid nerve paralysis as a clinical manifestation of MS has not been reported, now one of our department received the report as follows. Female patient, 22 years old. 3 years ago, no obvious incentive for patients with left abducent nerve paralysis, sustained 1 month self-healing, a few months after the recurrence in ophthalmic surgery. Right forebrain nerve paralysis appeared more than 20 days ago, no history of infection, no headache or facial sensation