重症肌无力(MG)是由乙酰胆碱受体抗体介导的、细胞免疫依赖的补体参与的一种神经-肌肉接头处传递障碍的自身免疫病,主要表现为骨骼肌无力及易疲劳性,可合并多种自身免疫性疾病,如甲状腺功能亢进(甲亢)。重症肌无力伴甲亢的发病率为3%~6%,患者在发病过程中大多表现为不同程度的肌无力,以累及眼肌多见[1]。当重症肌无力与甲亢同时存 Myasthenia Gravis (MG) is an autoimmune disease that is mediated by acetylcholine receptor antibodies and a cellular immune-dependent complement involved in the delivery of disorders at the neuromuscular junction, mainly manifested as skeletal muscle weakness and fatigue, which can be combined A variety of autoimmune diseases, such as hyperthyroidism (hyperthyroidism). The incidence of myasthenia gravis with hyperthyroidism is 3% to 6%, most of the patients showed varying degrees of myasthenia in the course of onset, with ocular involvement more common [1]. When myasthenia gravis and hyperthyroidism co-exist