In May I woke with my arms numb, a band across my abdomin numb, and some numbness in my legs. My GP doctor though possibly MS. A nurologist told me that the numbness was in my mind. Then in June I was told my B12 level was about 200, and I had Pernicious Anemia. I was given B12 injections for 5 days, and then once a month. Since then my right arm is not only numb but is now stiff and sore from my sholder to my finger tips. My right leg is weak and feels as if it is burning on across the shin and top of the foot. I can feel an electrical shock feeling when I flex my neck. At times concentration is difficult. I am wondering if this is really from being a bit low in B12 or is it something else?