最早出現的症狀為手部不對稱性肌無力,如扣鈕扣、用鑰匙開門等手部動作不靈活,握力減退。ALS病情發展緩慢,但患者的手部無力越來越明顯,並出現手部小肌肉萎縮,以大小魚際肌、骨間肌、蚓狀肌為明顯,並逐漸延至前臂、上臂、肩胛帶肌群。
最早出現的症狀為手部不對稱性肌無力,如扣鈕扣、用鑰匙開門等手部動作不靈活,握力減退。ALS病情發展緩慢,但患者的手部無力越來越明顯,並出現手部小肌肉萎縮,以大小魚際肌、骨間肌、蚓狀肌為明顯,並逐漸延至前臂、上臂、肩胛帶肌群。
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