Tag: Bilateral edema

Approximately 20% of adults over the age of 50 in industrialized nations experience some form of lower extremity edema, with bilateral edema of the lower extremities occurring when fluid accumulates in both legs, feet, and ankles. This condition signals an excess fluid volume that the body's lymphatic or venous system cannot properly drain.

Peripheral edema, the buildup of fluid in the extremities, can occur on one side (unilateral), both sides (bilateral), or asymmetrically, depending on the underlying cause. For example, a sudden deep vein thrombosis often causes one-sided swelling, while congestive heart failure commonly leads to fluid retention on both sides.

According to the American Academy of Family Physicians, distinguishing between unilateral and bilateral edema is the most useful first step in determining the underlying cause of swelling. Understanding **what causes differential edema** is crucial for accurate diagnosis and effective treatment, as the reasons can range from localized issues to systemic organ dysfunction.