Diabetes: Diabetes patients often suffer from hardening of blood vessels in the foot. Sensory nerves may be numbed so that even when both feet are placed in hot water, the patient may not sense that they are being scalded.
糖尿病：糖尿病人的足部血管常會硬化，感覺神經也會麻痺，所以有時雙腳泡熱水，即使燙傷也沒有感覺。