3 weeks should be fine. While DVT is an uncommon complication, it is a risk of EVLT. Surgery/general anesthesia also have a slight risk of DVT so we like to avoid "stacking risks". Having said that, if you are up and walking and able to stay active then you should be fine to proceed with your vein ablations/EVLT.
Yes. You should be able to drive yourself to and from your appointment. Most Varithena procedures only take under 20 minutes. It is a very minimally invasive treatment with no down time but you will need to wear compression afterwards.
Hard to know without pictures and an ultrasound would be even more helpful but a lot of veins can be successfully treated with Ultrasound guided foam sclerotherapy. If very large and ropy then a microphlebectomy may be a better alternative.
The wrap and compression stocking over that act to compress the treated vein to prevent blood from pooling in the treated vein. If blood accumulates in a treated vein, it can cause increased tenderness and can lead to hemosiderin staining of the skin. If stains occur, they will often fade or even disappear but that can take up to a year. I advise using the wrap as your doctor suggest to prevent problems down the road
Varicose veins and venous insufficiency are chronic conditions. The treatments that we do have high success rates but you have millions of veins in your legs and other veins can go bad in the future. I do phlebectomies through needle holes (no incisions) and most patients are back to work the following day and occasionally patients will go to work right after the procedure. In my experience people feel better after vein treatments and are happy they had them done.
