(MS) is the most widespread disabling neurological condition of young adults around the world. You can get MS at any age, but most people are diagnosed between the ages of 20 and 40. There are relapsing/remitting types of MS and progressive types, but the course is never predictable. Researchers still don’t fully understand the causes of MS or why the rate of progression is so difficult to determine. Despite much research, solid numbers about how many people have MS are hard to come by. There is no national or global registry for new MS cases, so figures are only estimates. The good news is that many people with MS do not become severely disabled and most live a normal or near-normal lifespan.