Swollen ankles are common and often happen after standing for many hours, sitting during a long trip, exercising intensely, eating a lot of salty food, or spending time in hot weather. The swelling, medically known as edema, occurs when excess fluid collects in the tissues of the feet and lower legs. When it is mild and disappears after rest, movement, or elevating the legs, it is often temporary and not a sign of a serious probl…Continue Reading