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Home > Patient & Family Resources > Health Library > Hypothermia and Cold Temperature Exposure
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Hypothermia occurs when the body gets cold and loses heat faster than the body can make it.
A body temperature below normal can be a sign of hypothermia.
A rectal temperature is considered the most accurate body temperature. A normal rectal body temperature ranges from 97.5°F (36.4°C) to 99.6°F (37.6°C), and for most people it is 98.6°F (37°C).
Hypothermia can occur when you are exposed to cold air, water, wind, or rain.
Your body temperature can drop to a low level at temperatures of 50°F (10°C). Your body temperature can drop even if it is warmer than 50°F (10°C) if you are out in wet and windy weather. If you're in water that is 60°F (16°C) to 70°F (21°C), you are also at risk for hypothermia.
But hypothermia can occur indoors, especially in babies and older or ill adults who are not dressed warmly enough.
Early symptoms of hypothermia include:
Late symptoms include:
It is very important to know the symptoms of hypothermia and get treatment quickly. Often a hiker or skier's body temperature will drop really low before others notice that something is wrong. If someone begins to shiver violently, stumble, or can't respond to questions, it may be hypothermia. You need to quickly help the person get warm.
Sometimes a normal, healthy adult has a low body temperature, such as 96°F (36°C). If the person with the low body temperature is not ill, does not have any other problems, and is not an infant or an older adult, then evaluation usually is not needed.
Medical treatment for hypothermia depends on the severity of the hypothermia.
If you have mild hypothermia, home treatment may be enough to bring your body temperature back up to normal. Treatment of mild hypothermia includes getting out of the cold or wet environment, using warm blankets, heaters, and hot water bottles.
Moderate to severe hypothermia generally is treated in the hospital, where doctors can use special techniques to warm the core body temperature.
Anyone can get hypothermia. Very young children and older people can be at higher risk. This is because their bodies may not be able to control temperature as well. And some people have medical conditions or take medications that may increase their risk. People who spend lots of time outdoors may also increase their risk of hypothermia. This may happen when they are not dressed warmly enough and aren't prepared for colder temperatures.
Most healthy people with mild to moderate hypothermia recover completely without permanent injury. Recovery is harder for babies and older, ill, or inactive adults.
Current as of:
July 1, 2021
Author: Healthwise StaffMedical Review: William H. Blahd Jr. MD, FACEP - Emergency MedicineAdam Husney MD - Family MedicineKathleen Romito MD - Family Medicine
Current as of: July 1, 2021
Author: Healthwise Staff
Medical Review:William H. Blahd Jr. MD, FACEP - Emergency Medicine & Adam Husney MD - Family Medicine & Kathleen Romito MD - Family Medicine
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