What does phlegmasia mean?
Phlegmasia is an obsolete medical noun meaning inflammation, particularly an inflammatory condition accompanied by marked swelling or fever. The term is now encountered mainly in historical medical writing and in names preserved from earlier diagnoses, such as phlegmasia alba dolens, a severe form associated with pregnancy and childbirth. Its terminology reflects the humoral medicine that preceded modern pathology: illness was commonly understood through an imbalance among four bodily humors, with phlegm believed to be responsible for certain inflammatory complaints. In contemporary usage, phlegmasia does not designate a single well-defined disease, so it should not be treated as a precise current diagnosis. The word is nevertheless useful to readers of medical history because it records an earlier way of categorizing disease and links modern concepts of inflammation with the once-dominant theory of humoral imbalance.
nounAn obsolete medical term for inflammation, especially a condition characterized by severe swelling or fever. In modern usage it occurs chiefly in the names of historical diagnoses.
- An obsolete term for inflammation or an inflammatory disease, especially one marked by swelling, redness, heat, and pain.
- A historical diagnosis associated with severe systemic inflammation, including the condition now called phlegmasia alba dolens.
"The physician attributed the patient's fever to phlegmasia and prescribed rest and cooling remedies."
"The surgeon's notes described an advanced case of phlegmasia with extensive swelling of the limb."
"Phlegmasia was common in nineteenth-century medical writing but is now encountered mainly in historical texts and the names of specific conditions."
The plural is rarely used because the headword itself is obsolete and most common in historical sources.
"The archive contains case notes describing several severe cases of phlegmasias."
Before germ theory, doctors blamed illness on an imbalance of the four humors; phlegmasia named the inflammation they associated with excess phlegm.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does phlegmasia come from?
Phlegmasia entered English through late Latin phlegmasia, a medical term derived from Greek phlegmasia, meaning inflammation. Greek phlegmasia was formed from phlegma, associated with phlegein, “to burn,” reflecting the ancient belief that inflammatory heat arose from an excess of phlegm. The same root underlies English phlegm and phlegmatic and contributed to the medical term phlegmon.
How phlegmasia is actually used
The word is now archaic and uncommon outside historical medical literature. It should not be used for a current diagnosis without specialist historical context.
Easily confused with phlegmasia
Phlegm is the mucus or watery fluid associated with respiratory illness, whereas phlegmasia was a broad historical term for inflammation.
Phlegmon is a spreading bacterial infection of soft tissue, while phlegmasia was an obsolete, much broader medical term.