Varicose veins are typically caused by weak or damaged valves in the veins, while spider veins are most often caused by the backup of blood. They can also be caused by hormone changes, excessive exposure to the sun and injuries. Varicose veins often affect the legs, since they are the farthest from the heart and gravity makes it harder for the blood to flow upward. For many people, varicose veins and spider veins are simply cosmetic concerns. For others, varicose veins can cause aching pain and discomfort. Sometimes varicose veins lead to more serious problems. Some potential causes of varicose veins include obesity, pregnancy, standing for long periods, inactivity and hormone imbalance.

When painful signs and symptoms of varicose veins occur, they might include:

• An achy or heavy feeling in the legs.
• Burning, throbbing, muscle cramping and swelling in the lower legs.
• Worsened pain after sitting or standing for a long time.
• Itching around one or more of the veins.
• Changes in skin color around a varicose vein.