Myasthenia gravis is an autoimmune disorder. It causes severe muscle weakness. Usually, the weakness occurs in the eyes and face, but it can happen in the neck, fingers, arms, legs, chest and elsewhere. The weakness gets worse after activity and better after rest. Although it can be serious, most people with myasthenia gravis have a good quality of life, respond well to treatments and have a normal life expectancy.
What Is Myasthenia Gravis?
Myasthenia gravis, sometimes just referred to as MG, is an autoimmune neuromuscular disorder. The body’s immune system blocks the signals sent from the brain to the muscles, and then the muscles can’t respond correctly. (1) It is a rare, long-term (chronic) condition that affects at least 20 in every 100,000 people worldwide. It peaks in women in their 20s and 30s and in men when they reach their 50s and 60s, and women are more likely to be diagnosed than men.