A 23-year-old man presented with a 1-month history of double vision and right eyelid drooping that worsened at the end of the day. On examination, manual raising of the ptotic right eyelid resulted in dropping of the left eyelid.
What is the most likely diagnosis?
A. Botulism
B. Horner’s syndrome
C. Miller Fisher syndrome
D. Multiple sclerosis
E. Myasthenia gravis
答案解析：
这一发现——被称为窗帘征，或增强的上睑下垂——特征性地见于重症肌无力。重复神经刺激呈递减反应，乙酰胆碱受体抗体水平升高。开始吡啶斯的明和泼尼松龙治疗。
正确答案：E
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