小儿多发性肌炎国内报告甚少。我院1980～1986年共诊治10例(男8例,女2例),就诊年龄3～15岁,发病年龄2～14岁,10岁以下7例,病程2个月～5年。一、临床表现: (一)肌肉症状:10例均有四肢对称性近端无力,尤以双下肢明显。蹲下不能站立9例,双上肢不能侧平举1例。仰卧不能直 Little report of pediatric polymyositis domestic. Our hospital from 1980 to 1986, a total of 10 cases (8 males and 2 females), treatment age 3 to 15 years old, age 2 to 14 years old, 10 years of age in 7 cases, duration of 2 months to 5 years. First, the clinical manifestations: (a) muscle symptoms: 10 cases of limb symmetry proximal weakness, especially in both lower extremities. Crouching can not stand in 9 cases, double-sided upper limb can not be flat in 1 case. Supine can not be straight