you DEFINTELY have a choice in the matter. The fact that you found and started taking LDN (I would guess it wasn't on suggestion by your neuro) shows you are ready to find a treatment for yourself.
If you search these forums, you will find a wealth of information on alternatives to the CRABS. I was on rebif, and through this web site have tried MANY a treatment. I am now on Statins and Mino (with 4-AP for symptoms) and am doing a lot better than I did while injecting myself. Although others are doing really well on the crabs.
There are also many trials that have shown promise, that you may consider.
Oh, by the way, welcome.
Gilenya, 80mg Lipitor, Inosine, Minocycline, Suppliments galore.
3 CCSVI treatments, no major noteable benefits thus far.