Frostbite is an injury caused by freezing of the skin and underlying body tissues.
The most common body parts to get frostbite are toes, feet, fingers, hands, nose, and ears. Frostbite occurs when part of your body is exposed to temperatures or wind chills below freezing, causing the temperature of the body part to drop below freezing. The skin and body tissues just below the skin become frozen and the blood flow decreases. Your health care provider examines the injured part and looks for signs of frostbite. If medical help is not available, find shelter and begin rewarming the frostbitten skin right away.