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A member asked:
Does normal emg (single fiber and repetitive nerve stimulation) completely rule out the possibility of congenital myasthenia?
A doctor has provided 1 answer
NOT immune part: Myasthenia is an immune attack against the muscle succinylcholine receptors. Immune attack cannot be seen on the EMG; only the muscle damage can, which is not immediate. By the way, MG is just one of MANY abnormal neuromuscular conditions.
Answered 6/10/2014
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Achr antibody was low positive (5) first time and negative second time. Neurologist ordered single fibre EMG and thymus MRI as right eye droops. If both normal- is myasthenia possible? What else could cause of false positive result? (VGCC negative)?
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