Thanks for researching that for me, none of that stuff seems to fit for me as I don't smoke, drink, have high blood pressure and so on and so forth....i guess i will just wait to see what the neurologist tells me :-)
I just googled nonspecific white matter and one of the early hits brought me right back to medhelp, but on the neurology forum from 1999 - here's the link
http://www.medhelp.org/posts/Neurology/white-matter-changes--in-brain/show/293102
I hope this explanation helps,
Lulu