Neuromyelitis optica aquaporin-4 antibody negative

Definition

Neuromyelitis optica (NMO) is an inflammatory demyelinating disease of the central nervous system characterised mainly by attacks of uni- or bilateral optic neuritis (ON) and acute longitudinally extensive (> 3 vertebral segments) myelitis. This form is seronegative for aquaporin-4 antibodies. Some patients may be myelin oligodendrocyte glycoprotein (MOG) antibody positive.

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