Symptoms of Frostbite 

Symptoms of first degree frostbite begin with some pain and itching in the affected area and then the skin develops yellow, red and white spots.  Numbness follows the discoloration.  With second degree frostbite the skin actually feels hard.  Blisters will develop that become black and hard.  The final state of frostbite results in a waxy feel to the skin. The blisters begin as purple and then turn black.  There is usually nerve damage and loss of sensation.  In many situations the affected tissues die and need to be removed.