The Department of Veterans Affairs (VA) provides health care at little or no charge to more than 5 million veterans annually.
There are many potential causes of foot, leg, and ankle swelling. In most cases, swelling occurs as a result of certain lifestyle factors, such as: Being overweight: Excess body mass can decrease blood circulation, causing fluid to build up in the feet, legs, and ankles.
Bakerâs (popliteal) cyst behind knee: Causes, symptoms, and natural treatment options. A Bakerâs cyst (popliteal) is a fluid-filled sac that causes a bulge, along with feelings of tightness, behind the knee. The pain can worsen when the leg is extended at the knee or when the knee flexes as a result of activity.