Never use dry heat. Call a physician as soon as possible. Frozen tissue is painless and appears waxy with a possible yellow color. It will become swollen, painful, and prone to infection when thawed.

• 禁止用干热的东西。尽可能叫医生来。冻伤的组织是不痛的，看起来象黄颜色的蜡一样。解冻时，会变得肿胀、疼痛和易于感染。