Myasthenia Gravis
What is myasthenia gravis?
Myasthenia gravis (MG) is a complex, autoimmune disorder in which antibodies destroy neuromuscular connections. This causes problems with the nerves that communicate with muscles. MG affects the voluntary muscles of the body, especially the eyes, mouth, throat, and limbs.
In the US, MG affects about 20 people in 100,000. Women affected by MG generally see onset of the condition by age 20 to 30; the onset of MG in men most commonly occurs after the age of 50. However, MG can occur at any age. Males are more often affected than females.