Swelling is the enlargement of organs, skin, or other body parts. It is caused by a buildup of fluid in the tissues. The extra fluid can lead to a rapid increase in weight over a short period of time (days to weeks).
Swelling can occur all over the body (generalized) or only in one part of the body (localized).
Slight swelling (edema) of the lower legs is common in warm summer months, especially if a person has been standing or walking a lot.
General swelling, or massive edema (also called anasarca), is a common sign in people who are very sick. Although slight edema may be hard to detect, a large amount of swelling is very obvious.
Edema is described as pitting or non-pitting.
Pitting edema leaves a dent in the skin after you press the area with a finger for about 5 seconds. The dent will slowly fill back in.
Non-pitting edema does not leave this type of dent when pressing on the swollen area.
Follow your doctor's treatment recommendations. If you have long-term swelling, ask your doctor about the options to prevent skin breakdown, such as:
Lamb's wool pad
Continue with your everyday activities. When lying down, keep your arms and legs above your heart level, if possible, so the fluid can drain. However, do not do this if you get shortness of breath. See your doctor instead.
Call your health care provider if
If you notice any unexplained swelling, contact your health care provider.
What to expect at your health care provider's office
Except in emergency situations (such as cardiac failure or pulmonary congestion), your health care provider will take your medical history and will perform a physical examination.
Medical history questions may include:
When did you first notice this?
Do you have it all the time?
Does it come and go?
How much swelling is there?
When you poke the area with a finger, does the dent stay?
Is it overall or in one area (localized)?
If swelling is in a specific area, what is that area?
Linda J. Vorvick, MD, Medical Director and Director of Didactic Curriculum, MEDEX Northwest Division of Physician Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.