Frostbite/ˈfrɔːstbaɪt/ Definition 1 of 2Pro Tip 1/3Health Hazard Indicates extreme cold injuries, can lead to serious health problems. Mountaineers are trained to recognize frostbite before it gets worse. Pro Tip 2/3Variable Severity Severity can range from minor to severe, affecting treatment options. After the ski trip, Jill had minor frostbite, treated with warm water. Pro Tip 3/3Cold Climates Most common in regions with harsh winter temperatures. During the Arctic expedition, frostbite was a constant threat.