Final Answer:
Frostnip is a superficial freeze injury that is reversible. It involves freezing of the outer layer of the skin and, with appropriate warming, typically results in full recovery without permanent damage.
Step-by-step explanation:
Frostnip is a superficial freeze injury that is reversible. Unlike more severe cold-related injuries, such as frostbite, frostnip involves freezing of the outer layer of the skin and is considered a mild and temporary condition. It typically occurs in cold weather conditions when exposed skin is exposed to freezing temperatures for a relatively short period.
The affected skin in frostnip appears pale or white and feels numb or tingly. However, unlike frostbite, tissue damage is minimal, and with appropriate warming, the affected areas can fully recover without permanent consequences. It serves as an early warning sign, signaling the need to take protective measures against further exposure to cold temperatures.