Causes of Pelvic Congestion Syndrome
Pelvic congestion syndrome is primarily thought to be due to the presence of varicosities in the lower abdomen and the inguinal area. In healthy veins, the blood usually circulates in a single direction and without any impediments. In certain instances in which the valves suddenly become damaged, the blood is then allowed to backflow. The valves are actually responsible for propelling blood only into a single direction because they act like flaps. The backflow of blood causes the vein to become engorged. The swelling of the vein then compresses surrounding nerves which then would elicit pain just like in pelvic congestion syndrome. More specifically, the possible causes of PCS are enumerated and briefly discussed below.

Physiological Changes
Pregnancy does not only cause some anatomical changes but physiological as well. To sustain the needs of the developing fetus, the woman’s body usually gains more fluid and weight. When the fluid amount is beyond what the veins can accommodate the latter usually become engorged to the extent that valves are damaged and blood is allowed to backflow leading to the formation of some varicosities. Over time the condition worsens especially when this is just being left untreated.

Anatomical Changes
One of the possible causes of PCS is believed to be the anatomical changes which take place in the pelvic and the veins as well. The structural alterations that have taken place in the pelvic region increase a woman’s risk of developing varicosities. Pregnancy has been sited to be one of the possible causes because this, too, leads to some changes in the anatomy of the pelvic and certain blood vessels.