‘Understanding progressive MS’, a free downloadable information booklet for the MS Society charity
Multiple sclerosis (MS) affects the nerves in your brain and spinal cord – also known as your central nervous system.
Think of your central nervous system as a pathway by which messages travel between your brain, spinal cord and other parts of your body. For instance, when you walk, messages must travel from your brain to your leg muscles. If that pathway becomes damaged, their journey may become slower, distorted or even blocked. That’s what causes MS symptoms. You might experience several or a few different symptoms, depending on the part of the central nervous system that’s affected.