Sunfish,
Like i said in my other post to you, my nystagnum hit it's worse at 2 years exactly. One morning it started at 5:30 and didn't go away for 12 hours. I was frantic, could hardly open my eyes, or be anything other than horizontal. Calling Stanford, my local doc, my own doc...i was seriously frightened. It started getting a tad better, I could open my eyes and look down without being dizzy or having nystagmus. i went to bed at 8:00. That was never happened again like that (knock on wood). I did have nystagmus 2-3 other times in 2011, but was up and about after 3-4 hours. This 3rd year has been more wonky headiness than before, which is easier to deal with. Do you take anything for the nystagmus?
I think that it got so bad at that time because my tumor was shrinking. In July 2010 it was 1.8 and I had another MRI in Feb 2011 and it was 1.6. Now, my own hypothesis is that even though it was shrinking in all directions, it was still on my balancing nerve moving about...not being still and steady. maybe this is happening to you. What was the size of your AN at this last MRI?
Tisha