This issue of Neurologic Clinics, edited by Dr. Mazen M. Dimachkie and Dr. Richard J. Barohn, focuses on Neuromuscular Junction Disorders. Topics include--but are not limited to--History of myasthenia gravis and neuromuscular junction disorders; Practical immunology of the neuromuscular junction; Practical anatomy of the neuromuscular junction in health and disease; Generalized myasthenia gravis; Ocular myasthenia gravis; Diagnosis of myasthenia gravis; MuSK and myasthenia gravis due to other autoantibodies; Treatment of myasthenia gravis; Evidenced-based approach of thymectomy for myasthenia gravis; Myasthenia gravis and pregnancy; Congenital myasthenic syndromes; Botulism; Lambert-Eaton myasthenic syndrome; and Measuring clinical treatment response in myasthenia gravis.