这个词是什么意思？
A sustained and usually painful contraction of muscle fibers. This may occur as an isolated phenomenon or as a manifestation of an underlying disease process (e.g., UREMIA; HYPOTHYROIDISM; MOTOR NEURON DISEASE; etc.). (From Adams et al., Principles of Neurology, 6th ed, p1398)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D009120 · MeSH 2026。
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