Frostbite

Frostbite is a thermal injury that is similar in nature to a burn injury.
Our body is about 60% water. When our tissue becomes cold enough, the fluid in our tissues can freeze. The extent of tissue injury depends on how cold and for how long the tissues are in this condition. The most commonly affected areas are hands, toes, fingers, ears, cheeks, and nose.

The skin can range from appearing red and painful to whitish-grey-yellow and waxy depending on the degree of injury.
Many people experience burning pain, tingling, or numbness.
Usually within the first 24 hours of injury, blisters may appear. This is because the most superficial (outer layers) of soft tissue are at the most risk of injury. Usually, the top layer of skin dies and then fluid from the body collects underneath, creating a blister. This fluid is usually a clear yellow and can continue to ooze from the wounds.
Some people may even experience their nails falling off. The nails can grow back.
The appearance of the frost bite is usually much worse than the actual extent of tissue damage.

Burns