<prompt> Multiple sclerosis is aDemyelinating diseaseInfective lesionPeripheral nervous system disorderAssociated with systemic illness  <response>: A Demyelinating disease MULTIPLE SCLEROSIS MS is characterized by a triad of inflammation, demyelination, and gliosis scarring; the course can be relapsing-remitting or progressive. Lesions of MS are typically disseminated in time and location. Demyelinating disorders are characterized by inflammation and selective destruction of central nervous system myelin. Peripheral nervous system is spared, and most patients have no evidence of associated systemic illness. 