heart and blood vessel disorders
Swelling
Introduction
Swelling is due to excess fluid in the tissues. The fluid is predominantly water. Swelling may be widespread or confined to a single limb or part of a limb. Swelling is often in the feet and lower legs. However, people who are required to remain in bed for extended periods (bed rest) sometimes develop swelling in the buttocks, genitals, and back of the thighs. Women who lie on only one side may develop swelling in the breast they lie on. Rarely, a hand or an arm swells. Sometimes a limb suddenly swells. More often, swelling develops slowly, beginning with weight gain, puffy eyes upon awakening in the morning, and tight shoes at the end of the day. Swelling may develop so gradually that people do not notice until the swelling is considerable. Sometimes people have a feeling of tightness or fullness. Other symptoms may be present depending on the cause of the swelling and may include shortness of breath or pain in the affected limb. 