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Neuromyelitis optica spectrum disorder

Neuromyelitis optica spectrum disorder (NMOSD) is a rare neurological (brain) condition characterised by episodes of optic neuritis (inflammation or swelling of the optic nerve), transverse myelitis (inflammation or swelling of the spinal cord), together with one or more other diagnostic criteria including in some cases the presence of a specific antibody (AQP4).This information sheet from Great Ormond Street Hospital (GOSH) explains the causes, symptoms and treatment of neuromyelitis optica spectrum disorder (NMOSD) and where to get help.