During sclerotherapy, you may experience mild discomfort and cramping for a minute or two when the solution is injected into the veins. There might be some itching and bruising as well. With lasers, there might be some swelling that will disappear within a few days. With both, you might experience some discolored skin in the areas that have been treated, but this fades in 10-14 days. It’s extremely important that you see a highly trained dermatologist—to have these procedures done. In inexperienced hands, lasers, in particular, can cause burns and scars on the skin.With both methods, we advise our patients to avoid wearing lotions the day of the procedure—and to avoid vigorous exercise; hot baths, hot tubs, and saunas; as well as exposure to sunlight for at least one to two days after treatment. Taking off from work won't be necessary.