Does anyone out there have numb patches of skin? I am B12 deficient and also hypothyroid along with coronary heart disease issues. Recently I've developed a numb patch on my leg and I think am developing another one. I also have a peculiar sensation sometimes on my feet which feels like a spider crawling over them. I feel tired most of the time but am on 3 monthly B12 injections which the doctor says should make me feel well. I am debating whether to supplement with sublingual spray with the hope that I might feel better. However, if I do and then have to have a blood test to check B12 levels, they might be so high that the doc will stop my injections so I am in a bit of a quandary. Can anyone advise?