Originally posted 2012-09-07 05:14:41. Republished by Blog Post Promoter Myasthenia gravis (MG) is an autoimmune disorder affecting the voluntary muscles. Like other autoimmune conditions, the body attacks its own by mistake. What happens in myasthenia gravis is that the immune system hinders the neuromuscular impulses that are necessary for muscular function. Based on several researches,...