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).
Raftery AT, Lim E, Östör AJK. Abdominal swellings. In: Raftery AT, Lim E, Östör AJK, eds. Churchill's Pocketbook of Differential Diagnosis. 4th ed. Philadelphia, PA: Elsevier Churchill Livingstone; 2014:10-25.
Seller RH, Symons AB. Swelling of the legs. In: Seller RH, Symons AB, eds. Differential Diagnosis of Common Complaints. 7th ed. Philadelphia, PA: Elsevier; 2018:chap 31.