Frostbite is local or systemic damage to the human body caused by the cold and damp external environment. Localized frostbite is more common in life, and occurs most frequently at the ends of the limbs, face, and auricles.
Rewarming should be performed as soon as possible to reduce tissue freezing. When the skin is prone to frostbite, you should immediately return to a warm room, remove wet and tight clothes, allow the limbs to rewarm naturally. After 5-10 minutes, approach the heating equipment to allow the temperature of the skin to rise.