T33-T35: Frostbite

Frostbite is a group of conditions that occur when skin and the tissue beneath it freeze due to exposure to cold temperatures, typically affecting areas such as the fingers, toes, nose, ears, cheeks and chin. This freezing can cause damage to the skin and underlying tissues, which could be either superficial or deep. Superficial frostbite involves the skin surface while deep frostbite can extend to the muscles, bones, and nerves. Initial symptoms may include numbness, a prickling sensation, and skin discoloration ranging from white or yellowish, to bluish-gray. As frostbite advances, it can lead to complete loss of sensation, blister formation, and even death of skin and underlying tissues resulting in gangrene. Severity tends to vary depending on duration of cold exposure and level of freezing endured.