Oedema: Is a build-up of fluid

Oedema is a build-up of fluid in the ankles, feet or legs that can be caused by various factors. Learn how to recognise, treat and prevent oedema and when to see a GP. Edema, or water retention, occurs when fluid builds up in the tissues of the body. Learn about edema here. Wearing compression garments and reducing salt in the diet often relieves edema. When a disease causes edema, the disease needs treatment, as well. Edema is swelling that occurs from fluid retention. Read more on what causes it, when to seek emergency medical help, and how to treat it.