Causes and Prevention of Varicose and Spider Veins Varicose veins are simply enlarged veins and spider veins are a smaller version of the same condition. They can cause dull discomfort and may get worse as you age, but severe pain is uncommon. You can try to prevent varicose and spider veins by taking the following i.e exercise regularly to improve your leg strength, circulation, and vein strength. For more information visit doctorsbestwellness.com. in Public bookmarkswith varicose--spider-veinsby 2 users