Results Hypothyroid myopathy and polymyositis had similar symptoms of muscle dysfunction and elevation of serum muscle enzymes, but could be distinguished by thyroid function tests.

• 结果甲状腺功能减退性肌病与多发性肌炎在肌肉方面的表现相似,但甲状腺功能检查可以鉴别,左甲状腺素替代治疗有效。