what is multiple sclerosis?
Multiple sclerosis (MS) is a central nervous system disorder. It affects the brain and spinal cord and spares the nerves and muscles that leave the spinal cord. MS is an inflammatory disorder in which infection-fighting white blood cells enter the nervous system and cause injury. It is a demyelinating disorder because the myelin sheath that protects nerves is stripped off during inflammation. When this happens, the nerves cannot conduct electricity as well as they should, causing various symptoms. MS can happen to just about anyone and is long-term. Approximately 2.5 million have MS worldwide. (source: Cleveland Clinic)