Edema

Edema is the accumulation of fluid in the body's tissues, causing swelling. It most commonly occurs in the lower extremities, such as the ankles and feet, but can also affect other areas, such as the abdomen and face. It is typically caused by an imbalance in the body's fluids, such as an increase in sodium or a decrease in protein. Edema can be caused by a variety of medical conditions, such as heart failure, kidney disease, and liver disease. Symptoms of edema include swelling, tenderness, and a feeling of tightness in the affected area. In severe cases, the skin may become discolored, thin, and shiny.