Neuromyelitis optica (NMO) is a treatable central nervous system inflammatory demyelinating disorders characterized by acute myelitis and optic neuritis, especially clinically severe longitudinally extensive transverse myelitis (LETM) and simultaneous bilateral ON. NMO is likely autoimmune in nature as a significant proportion of patients are seropositive for aquaporin-4 (AQP4) IgG autoantibodies. I studied the clinical features of Chinese NMOSD patients and their AQP4-IgG seropositivity rates of... Mehr