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If you are not able to measure your temperature with a thermometer, you need to look for other symptoms of illness. It is important to look for and evaluate other symptoms along with the fever. With a minor illness, such as a cold, you may have a temperature, while a very serious infection may cause little or no fever. The degree of fever may not show how serious the illness is. Children tend to have higher fevers than adults. Most healthy children and adults can tolerate a fever as high as 39.4☌ (103☏) to 40☌ (104☏) for short periods of time without problems. A temperature of up to 38.9☌ (102☏) can be helpful because it helps the body fight infection.
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Fever temperaturesĪ fever is a high body temperature.
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Your temperature may go up when you exercise, wear too many clothes, take a hot bath, or are exposed to hot weather. Your temperature may be as low as 36.3☌ (97.4☏) in the morning or as high as 37.6☌ (99.6☏) in the late afternoon. Most people have an average body temperature of about 37☌ (98.6☏), measured orally (a thermometer is placed under the tongue). Oral temperatures are usually taken in older children and adults. Temperatures in this topic are oral temperatures. When you have a fever, your other symptoms will help you determine how serious your illness is. In most cases, having a fever means you have a minor illness.
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Fever is the body's normal and healthy reaction to infection and other illnesses, both minor and serious.
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