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.
What causes swollen feet and legs? Your feet and legs swell when fluid builds up in the space between the cells of your body. There are many reasons this can happen, some quite serious and many minor or transient. You should consult your doctor to determine the cause of your swelling, which you may hear referred to as edema. Among the possible causes for swollen feet & legs: