Oedema is a build-up of fluid in the body which causes the affected tissue to become swollen. The swelling can occur in one particular part of the body or may be more general, depending on the cause.Edema occurs when tiny blood vessels in your body (capillaries) leak fluid. The fluid builds up in surrounding tissues, leading to swelling. Read this interesting journal to find out more about oedema and how it could become a life changing event