G70: Myasthenia gravis and other myoneural disorders

G70.8: Other specified myoneural disorders

Sometimes, with certain disorders, the immune system produces antibodies that attack the body itself.

Muscles are made up of many long cells. These cells form the muscle fibers. Muscle movement is controlled by nerves. For information to get from the nerves to the muscles, nerve cells generate certain signals. These signals are absorbed by the muscle cells.

In your case, certain antibodies may be stopping the signals from being transmitted properly between the nerves and muscles. When the signals are not properly transmitted between the nerves and muscles, the muscles usually get weak quickly.

There may be various symptoms with this disorder because there are a lot of muscles with different tasks. The muscles in the arms and legs, for example, may quickly weaken. The person is then usually no longer able to walk properly.