走马疳，坏疽性口炎嘴或生殖器部分严重的经常为生疽性的发炎，通常在感染了传染病后发生，最常发病于卫生条件极差或营养状况不良的孩子 A severe, often gangrenous inflammation of the mouth or genitals, occurring usually after an infectious disease and found most often in children in poor hygienic or malnourished condition.
他的脚生了坏疽，必须截除。 When gangrene set in, his foot had to be amputated.