Before thinking about how to treat the blue veins you see on the legs, you should be thinking about why are they there.No doctor or nurse, no matter how clever, can tell that by simply looking at your legs or looking at a picture.You need to have a venous duplex ultrasound scan performed by a specialist vascular technologist who does nothing but venous duplex ultrasound scans. This will tell you whether you have underlying venous reflux causing the veins.In the majority of patients with visible veins on the surface, there will be underlying venous reflux causing increased pressure making the surface veins more visible.Treatment then starts by treating the underlying veins first and seeing if the surface veins are still causing a problem. Sometimes they go as part of that treatment.If you have the underlying veins treated successfully, and the surface veins are still present, that is when you can decide how to treat them. Treatment such as foam sclerotherapy, micro-sclerotherapy and even phlebectomy can be successful depending on how big the veins are, how deep they are, where they are and how thick the wall is on ultrasound.At Whiteley clinics, we often treat the underlying veins first and then use a combination approach to give the optimal result-a process directed by the Whiteley protocol, and based on science.