In a patient with suspected Miller Fisher syndrome, would you wait until antibody testing results to start IVIG or treat empirically?

Do not wait to treat. Syndromes on the Guillain-Barré spectrum, including Miller-Fisher, are clinical diagnoses. Miller-Fisher may not always have the triad of external ophthalmoplegia, ataxia, and areflexia at the time of presentation and may have overlap features with some other conditions on the ...