NCIt definition : A chronic autoimmune neuromuscular disorder characterized by skeletal muscle weakness.
It is caused by the blockage of the acetylcholine receptors at the neuromuscular junction.;
Alternative definition : NCI-GLOSS: A disease in which antibodies made by a person's immune system prevent
certain nerve-muscle interactions. It causes weakness in the arms and legs, vision
problems, and drooping eyelids or head. It may also cause paralysis and problems with
swallowing, talking, climbing stairs, lifting things, and getting up from a sitting
position. The muscle weakness gets worse during activity, and improves after periods
of rest.;