Hypothermia

Hypothermia is a dangerous fall in core body temperature below the normal range, impairing heart rhythm, breathing, clotting, and brain function. It results from cold exposure, wet conditions, shock, anesthesia, or being very young, old, small, or ill. Newborns and small animals are especially vulnerable. Signs progress from shivering to weakness, slowed heart rate, stupor, and collapse. Treatment is gradual rewarming and supportive care.