Major purpose of this article is to explain Causes of Leg Swelling. The major source of leg swelling is long-term venous insufficiency. Vein disease or vein disorders happen two times as often as coronary artery illness, three times more often than peripheral arterial illness, or PAD, and almost five times more popular than congestive heart malfunction. Leg inflammation or leg edema is a frequent medical malady. The reason of leg inflammation ought to be discovered and healed. Here explain six biggest causes of leg swelling: Venous stasis, Varicose veins, Lymphedema, Chronic venous insufficiency, Venous reflux disease and Venous hypertension.