Hypothermia
Overview
Hypothermia is when a person's normal body temperature of around 37°C (98.6°F) drops below 35°C (95°F).
Causes
It is usually caused by being in a cold environment. It can be triggered by a combination of things, including prolonged exposure to cold (such as staying outdoors in cold conditions or in a poorly heated room for a long time), rain, wind, sweat, inactivity or being in cold water.