The veins under both sides of my tongue have dark purple dots, about 30 or so on each side, eminating from the larger veins. I noticed it today when I was holding a mirror in a dentists office while he was working on a crown 9he was checking the color). I m not sure how long they ve been there, but when I asked the dentist, he said check with your doctor , which made me concerned because if it were not an indication of a serious condition, I would have expected him to say no problem, etc. Thanks!