Contact a healthcare Skilled if sudden or unexplained swelling develops in a single or the two legs, ankles, or feet. Varicose veins are a common indicator of venous insufficiency. These twisted and enlarged blood vessels might bulge or protrude outward and are typically situated in the ankles, calves, or thighs. https://www.sgvascularctr.com/swollen-leg-why-do-i-have-it-and-what-can-i-do/