A B12 deficiency can definitely cause neurological sx and a severe one, even brain lesions. I have read in several places that there is a high incidence of B12 deficiency in MS patients. Here's one blurb although this one concerns a very small sample: http://www.ncbi.nlm.nih.gov/pubmed/1596201

On a related note, get your homocysteine levels checked as well. I started researching this because years ago I was prescribed folic acid for high levels and recalled this after my MS dx. Like low B12, there seems to be a high instance of elevated homocysteine levels in MS patients. (Actually, just saw that one thing about this appears to the right of the link I posted above.)

Yabbit!

Good for you! One more step of elimination! Take the B12 and see what comes of it, it may be the ticket ( fingers crossed here)

Let us know what comes of it will ya!! I'm asking for B12 and Vit D testing at my next appt. Hoping they will add something to my QOL, I think I may be REALLY low on VitD due to the night work and I have never had my B12 tested. After reading the responses here, I figure it can't hurt!

I am here doing the same thing you are...FREEZING!!! It's TIME for it to warm up!! The dwindling woodpile is scaring me. I'm sitting here in farmer jeans with flannel PJs on under them, wool socks, LLBean slippers, and fingerless gloves! The wind is whistling through the cracks again and I am on a mission to seal every freakin' crack and cranny in this house! I stocked up on a bunch of clear silicone caulk today...have gun will seal!!

I am one of those MS patients with a peripheral neuropathy due to a B12 deficiency.
Mine has been so severe that it is difficult for my neurologist to know whether he is treating the deficiency or the MS.
I take sublingual B12 on a daily basis. However, I have had a recent symptom increase and today I have a MRI and my blood work done and we shall see if my B12 levels are still good.

Wow, Nevada. Well, at least the good thing here is that your doctor acknowledges this. It's amazing but I've read about many people with MS whose B12 levels were not even included in the initial blood panel when they were first being dxed. My PCP did the original bloodwork and I love him, but I was one of those people! I'm less forgiving towards my MS specialist, who didn't ask for the level when it was obviously missing. He should have definitely known better. I had to ask for the test on a subsequent visit and my PCP was happy to oblige.

Sorry to hear about your increased sx and hope they improve. Let us know what happens with your blood work!

I know on my last set of labs my B12 was normal, as far as I know, but I still take a sublinqual B12 supplement everyday and swear it has helped make me feel better. More energy, clearer thinking, less fatigue, and over all feeling of well being.

Am I nuts here? It's the only thing I have changed in the last month is taking the supplement.

Sure, you're probably nuts like the rest of us but not necessarily about this. I've read this time and time again from people who clinically fall within the normal range, not just MS patients. I really don't know much about the differences in tests but an MMA urine test is supposed to be more accurate than blood. I do take a supplement but think I'm going to ask my PCP to humor me and do the MMA if it's covered by my insurance.

There's really some great info. and knowledgeable people on the vitamin board here. I've been impressed and it's another great reason I'm glad I took the plunge and registered here.