Frostbite (congelatio in medical terminology) is the medical condition wherein localized damage is caused to skin and other tissues due to extreme cold. Frostbite is most likely to happen in body parts farthest from the heart and those with large exposed areas. The initial stages of frostbite are sometimes called "frostnip". Classification Cold injuries can result in a number of distinct conditions including:Frostnip is a superficial cooling of tissues without cellular destruction. Chilblains a… (More on Frostbite)