What does anasarca mean?
Anasarca is the medical term for severe, generalized edema — a widespread accumulation of fluid in the body's soft tissues that produces pronounced swelling across large areas of the body rather than in a single region. Unlike localized swelling around an injury, anasarca affects the subcutaneous tissues broadly, often leaving skin that pits visibly when pressed. It is not a disease in itself but a striking physical sign of serious underlying conditions, most commonly congestive heart failure, cirrhosis of the liver, kidney disorders such as nephrotic syndrome, or profound protein deficiency. Clinicians assess it through physical examination and treat it by addressing the root cause, sometimes alongside diuretic therapy. The word derives from Greek roots meaning 'throughout the flesh' and entered English medical vocabulary in the early modern period, when the condition was more loosely called dropsy. Today anasarca remains firmly a technical term of hospital wards and textbooks, rarely encountered in everyday conversation, yet it vividly illustrates how the language of medicine names patterns of illness with precision.
nounGeneralized swelling of the body caused by the accumulation of fluid in the tissues, occurring throughout the subcutaneous layers rather than being confined to one area.
- Widespread, generalized edema involving the subcutaneous tissues of the whole body, typically a sign of severe underlying disease such as heart, liver, or kidney failure.
"The patient presented with profound anasarca, her limbs so swollen that the skin shone taut and pitted under pressure."
"On examination, the physician noted marked anasarca, with pitting edema extending from the feet to the thighs and into the abdominal wall."
"In the nineteenth century, anasarca was often described simply as dropsy, its true causes poorly understood until advances in renal and cardiac medicine."
Rarely pluralized; in practice the singular is used even when describing multiple patients, as in 'cases of anasarca'.
"The ward admitted two patients presenting with anasarca that week."
Anasarca shares its Greek root 'sarx' (flesh) with sarcasm and sarcophagus — a word for swollen flesh descended from the same family as biting wit and stone coffins.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of anasarca
Anasarca comes from the Greek elements 'ana-' ('throughout' or 'up') combined with 'sarx' (genitive 'sarkos'), meaning 'flesh', so the word literally conveys swelling 'throughout the flesh'. It passed into Latin medical writing and entered English usage in the early seventeenth century, when physicians still often grouped all fluid retention under the older term 'dropsy'. The same Greek root 'sarx' gives English several other borrowings, including sarcasm, sarcophagus, and sarcoma, making anasarca a distant cousin of both biting wit and stone coffins.
How anasarca is actually used
Strictly a clinical term used in medicine and pathology; it appears rarely outside professional or historical medical writing. It carries a grave connotation, since anasarca typically signals serious systemic illness such as congestive heart failure, cirrhosis, or nephrotic syndrome.
Easily confused with anasarca
Ascites is the accumulation of fluid specifically within the abdominal cavity, whereas anasarca refers to widespread fluid buildup in the body's soft tissues.