Varicose veins can be caused when parts of a vein weaken. This weakness makes it difficult for the body to efficiently circulate blood from your lower body back to the heart. Blood pools causing bulging, protruding, and sometimes painful veins. Aging can also be one of the causes. Various factors are responsible for causing vulvar varicosities in pregnant women. We have a few tips for identifying vulvar varicosities apart from the common symptoms.