Abstract

Myasthenia gravis (MG) is the most common autoimmune disease affecting neuromuscular junction transmission. MG is characterized by muscle weakness that worsens with activity and fluctuates over the course of the day. Involvement of respiratory musculature can lead to life-threatening crisis requiring intensive care unit care. Antibody testing is positive in most patients with MG. Treatment of MG includes short-term symptomatic treatment, chronic immunosuppression, surgical intervention, and immunomodulatory therapies for severe disease or crisis. We review advances in 5 areas relevant to diagnosis and management of MG: the role of IV immunoglobulin vs plasmapharesis in myasthenic crisis and severe disease; the clinical characterization of patients with antibodies to muscle-specific tyrosine kinase receptors; old and new investigational treatments; management of MG in pregnancy; and new confirmatory diagnostic tests.

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