Myasthenia gravis or MG is categorized as a neuromuscular disorder which is responsible for causing weakness in the skeletal... moreMyasthenia gravis or MG is categorized as a neuromuscular disorder which is responsible for causing weakness in the skeletal muscles. These are the muscles primarily in charge of body movements made by an individual. MG hampers the connectivity between the muscles and nerve cells. It is considered to be the most common primary disorder for neuromuscular transmission. Although the disease is rare but is regarded to be of a serious nature.