Title: +038=627.001-##001T_03-Fasadevasksystem NorAcon - International Code of Practice (ICOP).pdf
O.3.4.2.3 Second degree frostbiteIf freezing continues past the initial (first degree) stages, the skin may freeze and harden. However, the deep tissues are not affected and stay soft and normal. Second-degree frostbite usually results in blisters one to two days after becoming frozen. The blisters may become hard and blackened, but often appear worse than they actually are. Most of the injuries heal in approximately a month but the area may become permanently insensitive to both cold and heat.O.3.4.2.4Third degree frostbiteIf the area continues to freeze, the frostbite deepens. In third degree frostbite, this means the skin and underlying tissues have frozen. The symptoms are similar to second-degree frostbite. The skin is hard, may appear bluish-grey or yellowish-grey in colour and feel wooden to touch. Use of the area is lost temporarily. In severe cases, the loss of use is permanent.O.3.4.2.5Fourth degree frostbite