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British Columbia Specific Information Body temperature is a measure of the body's ability to generate and get rid of heat. Top of the page. Test Overview Body temperature is a measure of your body's ability to make and get rid of heat. When you are too hot, the blood vessels in your skin widen to carry the excess heat to your skin's surface. You may start to sweat. As the sweat evaporates, it helps cool your body. When you are too cold, your blood vessels narrow.
This reduces blood flow to your skin to save body heat. You may start to shiver. When the muscles tremble this way, it helps to make more heat. Fever In most adults, an oral or axillary temperature above A fever may occur as a reaction to: Infection. This is the most common cause of a fever. Infections may affect the whole body or one body part.
These include antibiotics , opioids , antihistamines , and many others. This is called a "drug fever. Other medicines keep the body from resetting its temperature when other things cause the temperature to rise. Severe trauma or injury. This may include heart attack, stroke, heatstroke , or burns. Other medical conditions. These include arthritis, hyperthyroidism, and even some cancers, such as leukemia and lung cancer.
Low body temperature hypothermia If a low body temperature is your only symptom, it is not something to worry about. High body temperature heatstroke Heatstroke occurs when the body fails to control its own temperature and body temperature keeps rising. There are two types of heatstroke. Classic heatstroke can happen even when a person isn't doing much, as long as it's hot and the body isn't able cool itself well enough by sweating. The person may even stop sweating. Classic heatstroke may develop over several days.
Babies, older adults, and people who have chronic health problems have the greatest risk of this type of heatstroke. Exertional heatstroke may happen when a person is working or exercising in a hot place. The person may sweat a lot, but the body still makes more heat than it can lose. This causes temperature to rise to high levels. Check for a very low body temperature in people who have been exposed to cold. Check for a very high body temperature in people who have been exposed to heat.
Find out how well a fever-reducing medicine is working. Help a woman plan for pregnancy by finding out if she is ovulating. How To Prepare Take your temperature a few times when you are well. Before you take your temperature: Wait at least 20 to 30 minutes after you smoke, you eat, or you drink a hot or cold liquid. Wait at least an hour after hard exercise or a hot bath.
There are different types of thermometers. Electronic thermometers are plastic and shaped like a pencil. They have a display window at one end and the temperature probe at the other end. These thermometers can be used in the mouth, rectum, or armpit. They are easy to use and easy to read. If you buy this type of thermometer, check the package for information about its accuracy. Ear thermometers are plastic and come in different shapes.
The small cone-shaped end of the thermometer is placed in the ear. Body temperature is shown on a digital display.
The results appear in seconds. Some models also show what the oral and rectal readings would be. Temporal artery thermometers have a small "cup" that is moved across the skin over the artery in the forehead. Products for taking temporal artery temperature sweeping thermometer across your child's forehead at home have not yet been shown to be accurate or reliable enough for home use. How It Is Done Before you take a temperature, read the instructions for how to use your type of thermometer.
How to take an oral temperature Oral by mouth is the most common method of taking a temperature. Place the thermometer under the tongue, just to one side of the centre. Ask the person to close his or her lips tightly around it. Leave the thermometer in place for the required amount of time. Time yourself with a clock or watch. Some digital thermometers give a series of short beeps when the reading is done.
Thank you for this timely information. I too have a low normal body temperature leading health care workers to delay treatment or concern. I have had to really learn to push and be my own advocate. I am a very active and healthy 47 year old woman and this has been pretty consistent my entire adult life ha, well, not the 47 year old part.
Of course I am currently concerned at being turned away from covid testing, if the time comes, because my febrile temperature is lower that what they are taught to use as guideline. I too have a lower body temperature around I am healthy, and have had a lower body temperature all my life. I was a very active child and throughout my adult life. Even when I had the Hong Kong flu in my temperature only went to I certainly not alone in this body type.
Good article. My body temp averages For some individuals like me, clinicians may often very easily miss a diagnosis of infection because a high temp is closer to 98, not Thanks for visiting. Don't miss your FREE gift. Sign up to get tips for living a healthy lifestyle, with ways to fight inflammation and improve cognitive health , plus the latest advances in preventative medicine, diet and exercise , pain relief, blood pressure and cholesterol management, and more.
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Health Conditions Discover Plan Connect. Health News Fact Checked Forget Share on Pinterest The Getty Images. Why temps are falling. Read this next. Do You Have a Fever? Medically reviewed by Dr. Sirisha Yellayi, DO.
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