How can frostnip be differentiated from frostbite?

• A. Frostnip has numb, pale skin without tissue injury.
• B. Frostbite has numb white/blue, hard tissue with possible blistering.
• C. Both frostnip and frostbite present with blistering and tissue loss
• D. Frostnip always results in gangrene if not treated immediately

Answer: (A)

Frostnip is a shallow, surface-level cold injury. The key idea is that there is numbness and pale skin due to vasoconstriction, but no actual tissue damage occurs. The skin may recover fully with gentle rewarming because the damage is not to the deeper tissues.

In frostbite, freezing of tissue has occurred, so you see true tissue injury. The skin becomes white or blue, feels hard or waxy, and blisters can form after rewarming. This is a sign that deeper structures have been affected and that the injury may require more careful care to prevent lasting damage.

So, the statement that frostnip presents with numbness and pale skin but without tissue injury best captures the difference from frostbite. The other descriptions describe frostbite features or incorrect outcomes, which don’t help with distinguishing frostnip.