How does NMO Differ from MS? The Discovery of NMO IgG

Neuromyelitis optica (NMO) is often misdiagnosed as multiple sclerosis (MS) due to the similarity of symptoms. Working to solve this puzzle, Mayo Clinic researchers examined blood samples and discovered a biological pattern known as NMO IgG antibody biomarker, for which some NMO patients test positively. The NMO IgG biomarker helps scientists separate patients who have NMO and those who have MS – a critical breakthrough for finding a cure for NMO. All MS patients are encouraged to test for NMO.