Varicose veins are an unpleasant and often uncomfortable fact of life. They range from the small purple, known as spider veins, through to large bulging veins that cause discomfort or pain. Most of us will have noticed some of these popping up, but what about the varicose veins you can’t see? If you are experiencing discomfort, itching, pain or cramping and restless legs, you may very well have some varicose veins that are hidden below the surface.