Iam experiencing numbling and tingling in my legs and right arm. Feet becomes cold. And when this happens my mood completely goes off and i feel short breath. I cannot concetrate on anything other laying down. Post which I visited appollo where they did blood test they told vitamin b12 and D 25 are very low. Vitamin D is 5.03 Vitamin B12 is 126 For which they suggested 2 vitamin tablets. But after taking tablets things went worst. Now iam experinxing this daily 3times. Can anyone suggest is this due to nerve issue or viatmin issue. Is there test which ll tell the status of my nerves Instead of asuming it's beoz of low vitamin Please help. Whom should I visit to get proper answer.