Thankfully, they don't run in my family. My SIL and her mom have these so I just IM'd the SIL. They both are on their feet all day (hairstylists) but have had them since having kids. They both got laser surgery. They love it. She thought they did an Ultra Sound "map" of the vein. Then, she describes it as placing a thin wire in the vein, like a catheter, and giving a shock that burns/collapses it. No more big surgery to strip it out. Instant relief. Cardiovascular docs do them.

Hope this helps.