Varicose veins aren’t just an aesthetic or a cosmetic problem. These bluish, bulging veins can indicate other health conditions and cause severe pain, discomfort, and varicose vein symptoms. Varicose veins are also a potential sign of underling vein disease. varicose veins treatment are caused by vein valves and walls that have become weak or damaged. Varicose veins are caused by vein valves and walls that have become weak or damaged. This damage doesn’t happen overnight. It occurs over time when the blood pressure in your veins increases for various reasons. For example, when you stand or sit for long periods, the blood in your leg veins can start to pool, stretching the veins and causing damage.