What distinguishes deep frostbite from superficial frostbite?

Deep frostbite is characterized by the formation of ice crystals in the deeper tissues of the affected area, which can lead to cell death and significant tissue damage. This condition usually affects not only the skin but also the underlying structures such as muscles, blood vessels, and nerves. In contrast, superficial frostbite primarily impacts only the outer layers of the skin and does not penetrate deeper into the tissues. The severe consequences associated with deep frostbite can include amputation in extreme cases, highlighting the importance of prompt recognition and treatment.

The other options do not accurately reflect the differences between the two types of frostbite. For instance, while superficial frostbite only affects the skin surface, the distinctions of deep frostbite extend well beyond that. Similarly, deep frostbite does have significant effects, contrary to any suggestion that it does not, and it is not associated with high temperatures; rather, it occurs in conditions of extreme cold.