冻伤是人体较长时间暴露于寒冷所引起的局部性或全身性损伤。其发生除外界冷冻作用外,还与潮湿、人体局部血液循环不良或抗寒能力降低等因素有关。潮湿是促进或加重冻伤的一项重要因素。在同样的冷冻条件下,湿度大时易发生冻伤。因为水比较能传热,衣鞋受湿后保温能力差,皮肤受湿后对 Frostbite is a localized or generalized injury caused by prolonged exposure of the human body to the cold. In addition to its occurrence outside the freezing effect, but also with the wet, poor blood circulation in the human body or cold resistance and other factors. Moisture is an important factor in promoting or worsening frostbite. In the same freezing conditions, prone to frostbite when humidity is high. Because the water can be more heat transfer, poor ability to heat shoes after wetting, the skin wet by the right