What is myasthenia gravis?

Myasthenia gravis is the neuromuscular junction transmission barriers chronic diseases, muscle contraction that is dominant in the nerve under the influence of a variety of causes, can not be "signal" normal transmitted to the muscles, loss of muscle contractile function, clinical there have been ptosis, diplopia, strabismus, and masticatory muscle weakness expression for expression indifferent performance, not the dark gills inflatable, medullary myasthenia gravis adverse language appeared, Shen She failed to eating difficulties, restaurants choking, The etiology of this disease is systemic, but the muscles affected by the focus there will be different clinical manifestations.