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Symptoms will depend on the cause of edema.
Symptoms of peripheral edema include swelling of the affected area(s), which causes the surrounding skin to "tighten." The swelling from peripheral edema is gravity-dependent (it will increase or decrease with changes in body position). For example, if a person is lying on their back (supine), the swelling will not appear in the legs, but will appear in the area around the sacrum. The skin over the swollen area appears tight and shiny, and often when pressure is applied to the area with a finger, an indentation appears. This is called pitting edema.
In the case of pulmonary edema, there is often no evidence of fluid retention or noticeable swelling on examination of the patient's extremities. This is because the fluid is backing up into the lungs. Signs and symptoms of pulmonary edema include:
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