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.
What is behind knee swelling? A swollen area that can be felt behind the knee can be caused by several different conditions. A Bakerâs cyst is a collection of synovial fluid (fluid that is present within joint spaces) that bulges out through the back of the knee joint and can be felt in the back of the knee as a lump or enlarged area.