Vitamin B12 deficiency symptoms: A metallic taste in your mouth could be a sign Express.co.uk 11 symptoms of vitamin B12 deficiency My pins and needle burning tongue, dry mouth, sinus issues and digestive issues have been labeled as silent reflux all year, and after trying every reflux and sinus medicine multiple times I think Can someone please tell me if this is a b12 tongue, I've gotten my blood tested for b12 and it was fine but I am having severe neurological problems and have been