Which frostbite degree is associated with hemorrhagic bullae and skin necrosis?

• A. First degree
• B. Second degree
• C. Fourth degree
• D. Third degree

Answer: (D)

The depth of frostbite injury drives the signs you see. When the damage reaches full-thickness skin with underlying tissue injury, you get hemorrhagic, blood-filled blisters and visible skin necrosis. That depth of injury characterizes third-degree frostbite.

To put it in context: superficial frostbite affects only the surface, causing numbness and pale skin (first degree). Involvement of the dermis with clear or serous blisters but tissue still viable fits with second-degree frostbite. If the injury penetrates deeper and causes necrosis with hemorrhagic blisters, that reflects third-degree frostbite. Further extension into muscle, tendons, or bone constitutes fourth-degree frostbite with extensive tissue loss.