Which description best characterizes deeper frostbite?

• A. Deep tissue pallor and warmth
• B. Red, warm skin with swelling
• C. Blistering with edema
• D. White, hard, insensate tissue that may progress to gangrene

Answer: (D)

Deeper frostbite injures tissues beneath the skin, causing nerves to be damaged so the area becomes numb. The blood supply is severely impaired, so the skin looks white or pale and feels very hard to the touch. This insensate, white, firm tissue reflects significant freezing injury to deeper structures. If the injury is severe or not promptly treated, the tissue can deteriorate into necrosis and may progress to gangrene. The other descriptions describe signs more typical of surface involvement or inflammatory responses (warmth, redness, swelling, or blistering after thawing) and don’t capture the essential deep-tissue damage and loss of sensation seen with deeper frostbite.