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Edema. Edema or oedema, formerly known as dropsy or hydropsy, is an abnormal accumulation of fluid in the interstitium, which are locations beneath the skin or in one or more cavities of the body. It is clinically shown as swelling.dema or oedema, formerly known as dropsy or hydropsy, is an abnormal accumulation of fluid in the interstitium, which are locations beneath the skin or in one or more cavities of the body.
General edema as a Disease. General edema: Another name for Edema (or close medical condition association). Â»Introduction: Edema. Â»Symptoms of Edema. Â»Causes of Edema. Causes of General edema. Some of the causes of General edema are included in the list below: 1  Premenstrual syndrome. 2  Pregnancy. 3  Heart failure.  Kidney 1  conditions. Glomerulonephritis.