Hi, Cyclowolf.

I found this.

http://www.nytimes.com/health/guides.../overview.html

"ACQUIRED NYSTAGMUS


The most common cause of acquired nystagmus is certain drugs or medication. Phenytoin (Dilantin) - an antiseizure medication, excessive alcohol, or any sedating medicine can impair the labyrinth's function.

Other causes include:

Head injury from motor vehicle accidents
Inner ear disorders such as labyrinthitis or Meniere's disease
Stroke
Thiamine or vitamin B12 deficiency

Any disease of the brain (such as multiple sclerosis or brain tumors) can cause nystagmus if the areas controlling eye movements are damaged."

Since you already have concerns regarding MS, I wonder if you have had a recent MRI and/or a neuro evaluation?

I hope that it turns out to be something simple and treatable.

waves