Swelling in feet

Dependent edema refers to a collection of liquid under the skin. This generally occurs in people who are overweight or who have poor circulation.

Renal edema starts in the face and cardiac edema starts in the dependent areas like the leg and feet. These are the key points in distinguishing the two.

There are 6 types of edema. Generalized edema, skin edema, peripheral edema, corneal edema, cerebral edema, pulmonary edema, myxedema and lymphedema.

Discogenic edema is swelling (edema) of the vertebra in the spine (disc's).