hi i used to get numb in one leg. then both, then phantom itch in arms.
i had very low b12 (under 75). i took oral b12 and it got better, but then i would stop again. most ppl get b12 from food sources but i did not. some ppl do not absorb b12 well. did ur doc test for parietal cell antibodies? or serum b12 levels? i would think they must have, prior to ordering mris, but just thought i'd mention it. i am still working to resolve my b12 probs - don't know where they end and where ms starts, but you might look into that if not already ruled out.
Curr Treat Options Neurol. 2002 May;4(3):197-201. Peripheral Neuropathy Due to Cobalamin Deficiency.
Saperstein DS, Barohn RJ.
*Department of Neurology, Wilford Hall Medical Center, 2200 Bergquist Drive, Suite 1, San Antonio, TX 78236-5300, USA. firstname.lastname@example.org
Vitamin B12, or cobalamin (Cbl), deficiency can produce a number of neurologic complications, including myelopathy, peripheral neuropathy, optic neuropathy, and dementia. The myelopathy, combined systems disease, is probably the most well known manifestation, and is usually readily recognized. The frequency with which peripheral neuropathy is the sole presenting feature of Cbl deficiency is a point of controversy. The prevalence and the clinical and electrophysiologic features of Cbl deficiency peripheral neuropathy have not been well characterized. In addition, there is evidence that the commonly used assays of serum Cbl are not adequately sensitive. Testing the serum metabolites methylmalonic acid and homocysteine can increase the identification of Cbl deficient patients. Treatment with parenteral Cbl injections may not produce improvement of neurologic deficits, but might prevent worsening. In some patients with Cbl deficiency, oral Cbl may be an effective therapy.