Peripheral edema, or swelling, has long been associated with certain conditions and research continues regarding causes and treatments for the swelling that occurs when fluid collects in tissue.

Swelling in the feet is caused by fluid buildup from poor circulation, standing long hours, injury, pregnancy, heart, kidney issues, or excess salt intake.

Many people notice a strange pattern. The morning begins with normal, comfortable legs. But by evening, the legs feel heavy, tight, or slightly swollen. Shoes feel tighter. Ankles leave marks after ...