About
瘙 is a phono-semantic compound used in medical contexts to denote itching. Its semantic radical 疒 (disease) places it within the domain of medical symptoms. The phonetic component 蚤 (flea) provides the pronunciation and a secondary semantic link, as flea bites are a common cause of itching. It appears most often in the compound "瘙痒" (sàoyǎng), the clinical term for pruritus, effectively merging the category of ailment with a specific, recognizable source.