What Causes Edema During Pregnancy?
Tissue swelling, or edema, is a common occurrence during pregnancy, especially during the last trimester. A certain level of edema is normal during pregnancy due to circulating pregnancy-related hormones and associated changes in body salt and water balance. Marked increases in edema or swelling in one area, however, may indicate a medical problem. Pregnant women who notice a sudden change in edema require medical evaluation.