Which region is frostbite typically categorized under in ISS?

Frostbite is typically categorized under the external region in the ISS (Injury Severity Score) because it primarily impacts the skin and underlying tissues that are exposed to extremely cold conditions, commonly affecting the extremities such as fingers, toes, ears, and nose. This type of injury occurs when the affected tissue freezes, leading to cellular damage and, in severe cases, tissue necrosis.

By classifying frostbite as an external injury, it highlights its nature as a condition primarily linked to environmental exposure rather than internal injuries or conditions affecting deeper anatomical structures like the chest or abdominal regions. This classification allows for a clearer understanding of the types of injuries based on mechanisms of exposure and tissue affected, which is critical for effective treatment and prioritization in emergency situations.