What is the medical term for fluid retention?

The medical term for fluid retention is called edema. Edema is a condition that occurs when there is an abnormal amount of fluid in the body's tissues. This fluid can collect in the spaces between cells, in the organs, and in the cavities of the body. Edema can be caused by a number of different factors, including heart failure, kidney disease, liver failure, and certain medications. Symptoms of edema can include swelling, pain, and stiffness. Treatment for edema depends on the underlying cause.