经常表现严重并且通常表现为上升性瘫痪，最初表现为腿部无力并扩展至上肢和面部，伴随着深感觉的完全丧失。
It is frequently severe and usually presents as an ascending paralysis beginning as weakness in the legs that spreads to the upper limbs and the face along with complete loss of deep tendon reflexes.
其中例1首发症状为右上肢僵硬、无力，例2为两下肢僵硬、无力，例3表现为假性延髓麻痹。
The initial symptoms included rigidity and weakness of right upper limb(case 1), rigidity and weakness of legs(case 2), and pseudobulbar palsy(case 3).
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