When I was first dx I was told that MS was an inflammatory disease of the CNS. Being naive I thought that new drugs which dampen the inflammation would solve the problem. But MS is never simple. The following research paper notes that - 'The inflammatory activity and destructiveness of the multiple sclerosis process are to some degree independent of each other'.
As usual the researchers are good at observing but less good at working out what is happening.
http://www.msif.org/en/research/researc ... neity.html