Myasthenia Gravis Registry in China

Who May Qualify: - Fluctuating weakness in skeletal muscles, such as extraocular, bulbar, limb muscles, etc.. Demonstrating fluctuation and fatigability: Weakness is usually worse in the morning and improves with rest; worsens with sustained activity. - Patients themselves or their guardians can understand and sign the willing to sign a consent form form. To meet the eligibility criteria, at least one of the following additional criteria must be met: - a. Positive Tensilon test; - b. Decrease in compound muscle action potential by more than 10% with low-frequency repetitive nerve stimulation or widening of the "jitter" (the variability in time of the second action potential relative to the first) on single-fiber electromyography, with or without blocking; - c. Positive antibodies: Serum testing positive for AChR antibodies, MuSK antibodies, or LRP4 antibodies. Who Should NOT Join This Trial: - Patients with mental illness who cannot cooperate. - Patients with multiple organ dysfunction or in extremely critical condition, unable to complete relevant medical history collection or evaluation. Always talk to your doctor about whether this trial is right for you.