Early signs of hypothermia include shivering, pale skin, lethargy, apathy and mental dullness. The late signs are confusion, loss of consciousness, slow, shallow breathing, and slow weak pulse. In severe cases of hypothermia, it may be impossible to feel a pulse or hear a heartbeat, though they are present. Frost bite actually freezes body tissue. The most susceptible areas are the fingers, toes, nose and ears.
Frostbite can often take victims by surprise, since there is no pain initially.
First there is redness, a burning sensation and a decreased feeling. As frostbite progresses, the affected areas become insensitive to cold. The skin becomes white on the surface, but still soft inside. Later, the area will lose feeling and becomes hard on the inside as well. Severe frostbite can result in loss of body parts usually the fingers or toes.