Practice Essentials
Myasthenia gravis (MG) is a relatively rare autoimmune disorder in which antibodies form against acetylcholine nicotinic postsynaptic receptors at the neuromuscular junction of skeletal muscles (see the image below).[1, 2] MG is sometimes identified as having an ocular and generalized form, although one is not exclusive of the other and the ocular form is considered an initial, milder form of illness that progresses to the more severe generalized form in most but not all patients.