Oceangirl,
I am glad you posted here on this subject, and I don't understand why it would be inappropriate, since it is a question about MS and Pernicious Anemia.
I have already gotten a PA dx, and suspect that I have MS. I have had all the optical neuritis, cognitive, memory, gait, pain, spams, falls, and many other MS related symptoms. The problem is that MS and PA symptoms are very similar, so I don't know how they are not related, or the same, outside the B12 thing.
As for shots of B12 vs. the pills, I have heard that the pills are ill-advised because poor intestinal absorption is the problem to begin with, and putting 1000 mcg pills down only passes 1000 mcg through your system, and may not collect any more of it. The injections apparently avoid the issue of absorption. I have been on the pills for months since my dx, and only because getting to my Dr. was an issue because I couldn't drive for almost 3 months.
Where is the Pernicious Anemia board?? I'm new here too, and would like to plug in to that discussion group.
Maybe I'll drive up to Davis to your Dr.

I need a good Neuro. Mine doesn't even want to do a Spinal Tap until 6 months of the B12 passes. Since my MRI's were absent any plaque, I feel like it's the next step, and so say several members of my family that are not Neuro's, but Surgeons, and Radiologists.
Good luck with yours, I would really like to know what you find out.