I have demyelinating disease, Subacute Combined Degeneration.  It shares about 99% of symptoms with MS.  Over the last 14 years that I have gotten it under control nutritionally, I have found that the vast majority of the symptoms are symptoms from induced deficiencies from failure to heal something, from a miscellaneous virus to physical trauma.  In other words it is a slow refeeding syndrome.  Most of the symptoms can be healed.  Unfortunately the demyelinations are difficult to heal.  I started out with 200 symptoms (100% of FMS, CFS, congestive heart failure, asthma, MCS many more and ended up with a dozen or two from car wreck damage and some from SACD remaining.  Further some other problems have been showing up from medication damage.  My life is vastly improved getting rid of 175 symptoms that were NOT SACD and even that is better than it was 7 years ago.  Induced copper deficiency (that nobody recognized for 6 years) damaged my upper motor neurons and cost me half my teeth so one must know what they are doing.