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.
Trending Now. Answers. Best Answer: Swelling (a.k.a. edema) is caused by a buildup of fluids. When this happens in the legs, ankles, and/or feet, it's called peripheral edema. Swollen legs can also be caused by certain medications, including high-estrogen birth control pills, calcium channel blockers, certain antidepressants, and steroids.