Myasthenia gravis (MG) is a chronic, autoimmune, neuromuscular disease that causes weakness in the skeletal muscles. These muscles connect to the bones, allowing body movement in the arms and legs and breathing through contraction. Muscle weakness worsens after periods of activity and improves after rest. Some patients with MG can present with a myasthenic crisis, which is life-threatening and can result in respiratory failure. It is necessary to take a detailed and thorough history when patients have atypical presentations in order to make timely and accurate diagnoses.