I'm going to have to agree with medicineman here. The prevailing opinion on the possible causes of MS remain:
1. Genetic - fair hair and skin typical of Nordic descent (although Richard Pryor and Montel Williams prove the exception);
2. Immunologic - it is unknown what the precise mechanism is that causes the immune system to attack myelin;
3. Environmental - those who live in northern latitudes or have decreased Vit D stores seem more at risk; and
4. Infectious - research continues into measles, HHV-6, and EBV as potential triggers.
The most advanced of these theories being the genetic component. There are two basic forms of MS; progressive, and remitting-relapsing. There is unfortunately no current cure for the disease, despite what the CCVSI adherents would say.
Please do not let the foregoing dissuade you from submitting your claim. I wish you luck, and hope that you fare well.