先天性重症肌无力是小儿期重症肌无力的特殊类型,临床颇为少见。而孪生姊妹同患本病更为罕见,现就我们所见2例报告如下。例1:女,10岁,系第1胎,足月顺产。于出生后即哭声甚低,睁眼困难,两上睑下垂,吮乳无力。1岁时颈项以前屈,抬头困难。4岁时才能缓慢行走,常出现摔倒现象。上述症状每以午后为著。否认 Congenital myasthenia gravis is a special type of pediatric myasthenia gravis, clinical rather rare. The twin sisters with the disease is even more rare, now we see 2 cases reported as follows. Example 1: Female, 10 years old, Department of the first child, full-term follow-up. Very low after the birth of crying, eyes open difficulties, the two ptosis, sucking milk weakness. 1 year old neck flexion, rise difficulties. 4 years old to walk slowly, often fall phenomenon. Every afternoon for the above symptoms. deny