Neuromyelitis Optica Spectrum Disorder: A Rare Case of Transverse Myelitis and Autonomic Dysfunction.

Neuromyelitis optica spectrum disorder (NMOSD) is a demyelinating central nervous system disease commonly presenting with optic neuritis and transverse myelitis. Its pathology is mediated by serum aquaporin 4 immunoglobulin G (AQP4-IgG) and myelin oligodendrocyte glycoprotein (MOG) antibodies. It can present in a relapsing and monophasic pattern and is diagnosed using the diagnostic criteria published in 2015 by the international panel on neuromyelitis optica (NMO) diagnosis.