结果失神经后2周，游离神经末梢和感觉小体开始溃变；
Results The degeneration changes of free nerve endings and sensory corpuscles were observed after 2 weeks.
痒(亦称瘙痒)：游离神经末梢(通常为在皮肤)受到刺激时产生的想抓挠的感觉。
Itching (pruritus) : Stimulation of nerve endings in the skin, usually incited by histamine, that evokes a desire to scratch.
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