Although Myasthenia Gravis begins to develop in the eyes, it may spread to other related organs, causing more troubles. For example, this health condition may negatively influence the ability to breathe as well as mobility. Other patients report it becomes harder for them to move limbs or even stand straight. The facial gestures also suffer, especially when trying to smile or cry out loud. However, it is not as frightening as the problems with breath. The worst thing to happen is a “myasthenic crisis,” when a person is almost out of breath.