About
The character 痦 is a phono-semantic compound formed from the semantic radical 疒, denoting illness or physical afflictions, and the phonetic component 吾, which indicates its pronunciation. Etymologically, this construction associates the character with skin conditions, specifically referring to a mole or nevus. Its meaning has remained specialized to this dermatological context since its inception, without broadening or shifting to other uses, and its structural composition of 疒 and 吾 has been maintained in standard orthography.