This can cause damage to the blood vessels and result in blood clotting and lack of oxygen to the affected area. Yes, it can be. Serious cases of frostbite have been known to kill and damage tissue to the extent that amputation has been required. The extent of frostbite is best evaluated by a qualified medical professional. Most often, the hands, feet, ears, nose and face suffer frostbite.
Frostbite is caused by exposure of the body to cold.
Yes, the elderly and young are particularly susceptible. Although not medically related, it seems that persons from southern or tropical climates may also be more at risk. It is certainly easier to prevent frostbite than treat it. Wear several layers of light, loose clothing that will trap air, yet provide adequate ventilation. This is better protection than one bulky or heavy covering.