Cold weather injuries occur when the body is exposed to extremely low temperatures for extended periods. Common types include frostbite, which affects the skin and underlying tissues, and hypothermia, a dangerous drop in body temperature. These conditions can happen during outdoor activities in winter or in unheated environments. Symptoms of frostbite include numbness, tingling, and discoloration of the skin, while hypothermia may cause shivering, confusion, and fatigue. To prevent these injuries, it is essential to dress warmly in layers, stay dry, and limit time spent in cold conditions.