I cannot imagine what you are going through, and I apologise if this seems trite.
I had a look through you post list and did not from the titles see anything diet related. If you have it covered I apologise.
IF you have not thought about it you might like to look at some of the posts on the importance of balancing the omega threes and sixes DHA, and diet generally. The Greek Diet thread, the breast cancer diet etc
There is evidence that omega six may be implicated in brain tumours. In some trials tumours have been noted to be high in omega six. I have recently posted some threads on this.
There is evidence DHA will help with MS
http://www.msrc.co.uk/index.cfm?fuse...how&pageid=714
If you enter "DHA multiple sclerosis" into the search here you will get a lot more on MS and DHA.
http://www.ncbi.nlm.nih.gov/
DHA helps brain function and the world will not look any better but there is evidence DHA/ EPA helps us handle it more pragmatically.
And at a very simple level at least diet is something that you can control.
RB