The extra weight of the pregnant uterus can compress the veins and cause increased backpressure in them. Varicose veins can be inherited and if there is a strong predisposition in your family, this may be the most influential risk of all. Surgery on or near the hips can cause vein problems. Congestive Heart Failure and thrombus obstruction can also lead to the development of varicose veins. Some risk factors can be controlled.
Posture is important.
Standing up can increase the pressure in the veins, while lying down relaxes them. People who are required to stand for long periods of the day have an increased incidence of varicose veins. Being overweight increases abdominal pressure that impedes blood flow in the veins or decreases support for the veins themselves. The goal of any treatment or care is to improve blood flow back up to the heart. Elevate your legs while you are sitting and exercise or walk every day.