1. Myasthenia gravis  (Trust Mark: Doctor-Reviewed)
Myasthenia gravis is a neuromuscular disorder characterized by variable weakness of voluntary muscles, which often improves with rest and worsens with activity. The condition is caused by an abnormal immune response. • Reviewer: David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. Previously reviewed by Daniel Kantor, M.D., Director of the Comprehensive MS Center, Neuroscience Institute, University of Florida Health Science Center, Jacksonville, FL. Review provided by VeriMed Healthcare Network (8/7/2006).

2. Myasthenia Gravis  (Trust Mark: Doctor-Reviewed)
Myasthenia gravis (MG) is an autoimmune disease that causes muscle weakness. It affects the neuromuscular junction, interrupting the communication between nerve and muscle, and thereby causing weakness. People with MG may have difficulty moving thei...• Author: Richard Robinson, Monique Laberge Ph.D.