About
The character 瘘 is a phono-semantic compound. The radical 疒 provides the semantic category of disease, while the component 娄 supplies the pronunciation. In its traditional form 瘺, the phonetic element was 婁. The character specifically denotes a fistula, ulcer, or persistent sore, an abnormal bodily passage or infected wound that discharges fluid. Historically, medical texts have employed this term for diagnosing chronic localized infections, establishing its precise technical application.