" Fluid regularly leaks into body tissues from the blood. The lymphatic system is a network of tubes throughout the body that drains this fluid (called lymph) from tissues and empties it back into the bloodstream. Fluid retention (oedema) occurs when the fluid isn’t removed from the tissues.
The two broad categories of fluid retention include generalised oedema, when swelling occurs throughout the body, and localised oedema, when particular parts of the body are affected. " [Fluid retention (oedema) - visited on 20/02/2019]
NOTE:It's very important that the patient is assessed by a qualified healthcare professional. Please contact your doctor or your local hospital for assistance.