The length of onset can vary with each person, but may begin within 30 minutes to an hour of exposure to cold weather. To treat frostbite, be sure the affected area can be completely thawed. Do not begin to thaw the area, stop and then restart. Do not use hot water, as this may cause a secondary burn. Don't rub the affected area.
Most body heat is lost through the head and neck regions.
A hat and scarf act as a shield to keep heat from escaping. Gloves also will add some protection against frostbite. Be able to recognize hypothermia. Symptoms include shivering, cold skin and confusion. To treat hypothermia, take off wet clothes and drink warm fluids.