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Pitting edema is the term used to describe edema when pressure applied to the skin of the swollen area is released and an indentation is left behind (e.g. when the skin is pressed with a finger or when stockings or socks induce indentation). Non-pitting edema usually occurs in the arms and legs.

Pulmonary edema is often caused by congestive heart failure. When the heart is not able to pump efficiently, blood can back up into the veins that take blood through the lungs. As the pressure in these blood vessels increases, fluid is pushed into the air spaces (alveoli) in the lungs

Edema is swelling caused by fluid retention - excess fluid is trapped in the body's tissues. Swelling caused by edema commonly occurs in the hands, arms, ankles, legs and feet. It is usually linked to the venous or lymphatic systems.

This means that it gathers in the legs, and fluid is forced out of the blood vessels into the surrounding tissue. Edema can also be caused by varicose veins. Congestive heart failure can cause both peripheral edema and abdominal edema (ascites). ... This may cause swelling in the legs or a build-up of fluid in the abdomen.

Peripheral edema is edema (accumulation of fluid causing swelling) in tissues perfused by the peripheral vascular system, usually in the lower limbs. In the most dependent parts of the body (those hanging distally), it may be called dependent edema.

1. Do not sit with your feet hanging down for long periods of time.2. Limit the amount of salt in your diet.3. Exercise regularly.4. Drink plenty of fluids, and keep your skin cool in hot environments.5. Avoid repetitive motions, or take frequent breaks often to rest a body area.