Hi diagnonsense,

I do not believe the brain quakes are a form or l'hermitte's sign. When I first started having them I thought maybe it was a form of seizure. But my EEG's are normal.

For the most part they seemed to have settled down. Head movement did not seem to set them off. I could be just sitting watch tv, not moving, and i would be struck with either spinning vertigo that lasted only a few seconds, the brain quake or a combination of both.

B12, other vit. and mineral, electrolites, kidney function, thyroid, sugar levels have all been normal.

No LP as yet. I am also a frequent chatter on some MS boards.

BTW nice to meet you.