Varices are caused by venous obstruction, increased pressure, and venous insufficiency, resulting in dilated (enlarged) and/or misshapen veins. Pregnancy, hormonal and anatomic factors play a role in their development. They can arise in isolation, in association with leg/buttock, vulvar, or labial varices, or as part of pelvic congestion syndrome (a condition that causes chronic pelvic pain).Symptoms can include pelvic pain, heaviness, and pressure that are exacerbated by prolonged standing, exercise, and coitus. Generally, treatment is only needed if symptoms are present.