Therefore, the wind makes it feel much colder. With a wind chill temperature of -20 F, exposed skin can freeze in less than five minutes. Frostbite when the body tissue freezes and damage to that tissue occurs. The most susceptible parts of the body are the extremities such as fingers, toes, ear lobes, or the tip of the nose. Symptoms include a loss of feeling in the extremity and a white or pale appearance.
Medical attention is needed immediately for frostbite.
Hypothermia is when the body temperature falls below 95 F. Determine this by taking ones temperature. Warning signs include uncontrollable shivering, memory loss, disorientation, incoherence, slurred speech, drowsiness, and apparent exhaustion. Medical attention is needed immediately. Warm the body core first, not the extremities. To warm the extremities first drives the cold blood to the heart and can cause the body temperature to drop further which may lead to heart failure.