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Demyelinating DiseaseA demyelinating disease is any disease of the nervous system in which the myelin sheath of neurons is damaged. This impairs the conduction of signals in the affected nerves, causing impairment in sensation, movement, cognition, or other functions depending on which nerves are involved. The term describes the effect of the disease, rather than its cause; some demyelinating diseases are caused by infectious agents, some by autoimmune reactions, and some by unknown factors. Demyelinating diseases include multiple sclerosis, transverse myelitis, Guillain-Barr syndrome, and progressive multifocal leukoencephalopathy.
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