demyelinating diseases of the central nervous system (cns) are a group of autoimmune disorders affecting the myelin sheets of cns neurons resulting in different neurological deficits and disability. multiple sclerosis (ms), devic’s disease, progressive multifocal leukoencephalopathy, acute disseminated encephalomyelitis (adem), and neuromyelitis optica (nmo) are among the most common types of d...