There is no pain and no physical reason that is readily apparent
I am 86 years old and in good health..
As we get older our veins become less able to move the blood through them resulting in the pooling of blood which may result in varicose veins. "The most common local conditions that cause edema are varicose veins and thrombophlebitis (inflammation of the veins) of the deep veins of the legs. These conditions can cause inadequate pumping of the blood by the veins (venous insufficiency). The resulting increased back-pressure in the veins forces fluid stay in the extremities (especially the ankles and feet). The excess fluid then leaks into the interstitial tissue spaces, causing edema."
Edema may also be the result of numerous other organs not functioning upto full capacity such as the heart. The body responds by retaining salt which in turn causes retention of fluids resulting in edema.
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