What is MS?

Multiple sclerosis (MS) is a chronic or long-lasting disease that affects the central nervous system, which are the nerves that process information and send signals throughout your brain and spinal cord. When someone has MS, their immune system, which normally protects the body from disease, attacks the protective coating around the body’s own nerve fibers. The nerves themselves are also damaged in the process. This damage interrupts the flow of information through the nervous system, resulting in symptoms throughout the body.

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