Venous insufficiency happens when the veins inside the lessen extremities are not able to successfully press blood again to the guts. This difficulty is usually chronic in nature and occurs once the leg veins turn out to be enlarged (termed venous hypertension) as well as their valves cannot near thoroughly. https://www.sgvascularctr.com/swollen-leg-why-do-i-have-it-and-what-can-i-do/