About the data: We used the family income data from the 2013 American Community Survey. This counts only families, which the government defines as households with two or more people related by birth, marriage or adoption. The graph focuses on families living in the country's 30 most populous cities.
Diseases and conditions that may cause edema include: 1  Congestive heart failure. 2  Cirrhosis. 3  Kidney disease.  Kidney 1  damage. Weakness or damage to veins in your legs.  Inadequate lymphatic 1  system. Symptoms.  Risk factors.
Cause of Ankle Edema / Ankle Swelling in Both Legs. Ankle edema in both legs may be due to one of the following conditions: âº Cardiac disease: A decrease in the pumping function of the heart results in excessive pressure in small blood vessels, resulting in leakage of fluid into tissues.