Edema - Symptoms and causes - Mayo Clinic
WebJul 28, 2023 · Edema in foot and ankle. Swelling of the foot, ankle and leg can be bad enough to leave a dimple, also known as a pit, in the skin after pressing on the area. This swelling, called edema, is the result of too much fluid in the tissues. Congestive heart failure or the vein not working well, also known as venous insufficiency, is often the cause.
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