Then small patches of white appear, as freezing actually occurs. The skin also becomes less elastic. This is best noted in the finger pads, which remain pitted when touched or squeezed. Any further cooling will surely result in frostbite. Serious freezing is most common in the feet because of less awareness of them, poor circulation and sensation, and inadequate foot gear.
Hands are next in order of serious injury.
Exposed head parts are less likely to become frostbitten than feet because they are conditioned to exposure and have a better blood supply. Proper Rewarming Next to the extent of freezing, inadequate or improper treatment of a frozen part is the most common cause of serious loss of tissue. In many cases rewarming cannot be done without the part again becoming frozen. For example, removing clothing from other parts of the body to warm a frozen part may only result in the loss of more body heat, greater extent of injury, and the ultimate refreezing of the afflicted part. Thawing and refreezing should aways be avoided .