冻疮又称冻瘃。在冬天里,小孩子和一般循环状况欠佳的人,都容易生这个病。大多数是在手、足和两耳发生,肥胖的人,也有在脸上发生冻疮的。初起的时候,患处呈青色或紫色而有界限的红斑,这是由于寒冷刺激而发生内部组织阳性充血的结果 Frostbite is also called frozen pimple. In winter, young children and people with poor circulation generally are prone to the disease. Most occur in the hands, feet, and ears. People who are obese also have chilblains on their faces. At the beginning, the affected area was cyan or purple with a borderline erythema, which was the result of a positive congestion of internal tissues due to cold stimulation.