Blood clots. At times, veins deep inside the legs get larger. They might result in leg ache and swelling. Seek out health care help for ongoing leg pain or swelling. This could mean a blood clot. Laser treatment. Laser treatment sends robust bursts of light on to the varicose vein. https://www.sgvascularctr.com/what-surgery-is-available-for-varicose-veins/