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Distribution of edema: Unilateral. leg edema is generally due to a local cause such as deep vein thrombosis, venous insufficiency, or lymphedema. Bilateral. edema can be due to a local cause or systemic disease, such as heart failure or kidney disease. Generalized. edema is due to systemic disease.
Pitting edema causes the skin to become indented if the swollen area is pressed on for five seconds. The dent will then slowly fill back in. Non-pitting edema does not leave a dent in this manner. The swelling is generally painless and can occur in one or both feet. If you have painful edema, contact your primary care physician immediately. There are various causes for peripheral edema, including: Injury or trauma, such as a sprain or fractured bone.