The diagnosis of autoimmune Myasthenia Gravis (MG) remains clinical and rests on the history and physical findings of fatigable, fluctuating muscle weakness in a specific distribution. Ancillary bedside tests and laboratory methods help confirm the synaptic disorder, define its type and severity, classify MG according to the causative antibodies, and assess the effect of treatment objectively. We present an update on the tests used in the diagnosis and follow-up of MG and the suggested approach for their application.
Keywords: anti- muscle-specific tyrosine kinase (MuSK); anti-acetylcholine-receptor; diagnosis; myasthenia; neuromuscular jitter; repetitive nerve stimulation.