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.
There are likely to be other possible causes, so ask your doctor about your symptoms. 1  Ankle injury Ankle strain (type of Ankle injuries) Ankle sprain. 2  Local ankle conditions Insect bite. 3  Edema - ankle swelling may be the first sign of generalized edema or occur as part of it.  Ankle tendinitis (see Ankle 1  pain) Poorly fitting shoes.  Cellulitis.