Myasthenia gravis is an autoimmune disease of the nervous system that primarily affects the acetylcholine receptors on the postsynaptic membrane, causing muscle fatigue in patients. This can lead to general weakness throughout the body, double vision, and even progressive paralysis of the respiratory muscles, requiring active breathing assistance in severe cases. The early symptoms of myasthenia gravis mainly include: First, patients tend to fatigue easily, such as after exercise or labor, with a rapid decline in physical strength that only recovers after resting. Second, there may be ptosis, with patients unable to comfortably open their eyes, although this symptom can improve after resting or sleeping. As myasthenia gravis progresses into its later stages, there is a marked increase in overall weakness, necessitating treatment in a neurology department.