Varicose veins are a common condition that causes swollen, bulging veins. Though they can occur anywhere on the body, varicose veins are most commonly found in the legs and groin. Varicose veins are also called varices or reticular veins. They often cause no symptoms at all, but they can sometimes cause aching or throbbing pain in your legs and feet. They may also make it hard to walk and make you feel tired.