Many medical conditions can cause edema (swelling) or fluid retention.
A condition related to varicose veins called chronic venous insufficiency can cause swelling in the legs. Numerous natural treatments have substantial supporting evidence of effectiveness for this condition.
Minor injuries as well as surgery may cause swelling as part of the healing process.
Congestive heart failure can also cause leg swelling.
Women with premenstrual syndrome (PMS) often experience fluid retention prior to the onset of menstruation.
Edema frequently occurs during pregnancy .
People who are very stationary can also experience fluid retention - as could certain medications.
You need to see your doctor to know more.