myasthenia

myasthenia
[ˌmʌɪəsˈθiːnɪə]
noun

[mass noun]a condition causing abnormal weakness of certain muscles
肌无力，肌构成异常
■(全称 myasthenia gravis ˈgrɑːvɪs, ˈgravɪs)a rare chronic autoimmune disease marked by muscular weakness without atrophy, and caused by a defect in the action of acetylcholine at neuromuscular junctions
重症肌无力

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