Veins that are dim purple, blue or exactly the same coloration because the skin. Based upon skin shade, these modifications may very well be harder or easier to see. Superior diagnosis. Mayo Clinic Medical practitioners use in-depth imaging exams to diagnose varicose veins. These involve ultrasound and other checks.   https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-comprehensive-advice-for-optimal-results/