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.

• 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