If you're in the middle of the middle, however â not lower or upper-middle class â that would be an income range between $39,764 and $64,582, says Aaron Pacitti, an assistant professor of economics at Siena College in Loudonville, N.Y. Again, it isn't official.
Edema definition and facts. Edema is a swelling, usually of the legs, feet, and/or hands due to the accumulation of excessive fluid in the tissues. The edema that occurs in diseases of the heart, liver, and kidneys is mainly caused by salt retention, which holds the excess fluid in the body.
Leg and feet swelling that occurs with diseases of the heart, liver and kidneys is caused by salt retention holding excess fluid in the body, states MedicineNet. Edema is a normal response of the body to inflammation or injury and it is also caused by medical problems, notes WebMD. Continue Reading.