A formal or literary term for a scar left on the skin after a wound heals. In everyday speech, 傷跡 (きずあと) is more common.
An old scar remains on his arm.
Standard kanji spelling for 'scar'.
Rare variant; 瘡 is an uncommon kanji for 'wound' or 'sore'.
Compound of 創 (そう, 'wound') and 痕 (こん, 'mark' or 'trace'). The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning 'scar'.