Multiple Sclerosis or MS. Multiple Sclerosis is an illness that over 350,000 people in the United States have. There is no specific cause. However, there are several theories about why people have Multiple Sclerosis. Ninety percent of MS patients diagnosed are between the ages of 16 and 60, but MS can be diagnosed as early as childhood or even after age 60. Pages: 3 Bibliography: 3 source(s) listed Filename: 19653 Multiple Sclerosis Illness.doc Price: 26.85