Due to the fluid needed by the fetus and placenta, a pregnant woman's body retains more sodium and water than usual, increasing the risk of edema.

Your risk of edema may be increased if you take certain medications, including:

  • High blood pressure medications
  • Nonsteroidal anti-inflammatory drugs
  • Steroid drugs
  • Estrogens
  • Certain diabetes medications called thiazolidinediones

If you have a chronic illness such as heart failure, liver or kidney disease, your risk of edema increases, as well. Surgery can sometimes obstruct a lymph node, leading to swelling in an arm or leg, usually on just one side.

Sep. 19, 2014

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