The word "瘀斑" is formed from the character "瘀", meaning stagnation or congestion, constructed with the illness radical "疒" and the phonetic component "於", and the character "斑", meaning spot or speckle, constructed with the pattern radical "文" and the component "玨". Combined, "瘀" conveys blood stasis and "斑" conveys a visible mark, resulting in a term for a bruise or ecchymosis.