Recently, the weather has been hot and cold, the hospital is full of people, and many children have a fever. Some parents were so worried that they rushed their children to the hospital for a hanging injection, while some parents were very calm, thinking that it was a good thing for their children to have a fever, and they should carry it by themselves. Then, why do people have a fever? What should I do when I have a fever?
Fever, called fever in medicine, refers to the human oral temperature (oral temperature) higher than 37.3 ℃, the axillary temperature (axillary temperature) higher than 37 ℃, or the rectal temperature (Anal temperature) higher than 37.6 ℃.
Generally speaking, when the body temperature is measured correctly, the highest temperature is 37.4 ℃ ~ 38 ℃, which is called low heat; And those above 39 ℃ are high heat. If the temperature difference is greater than 1 ℃ ~ 1.2 ℃ in a day, it is also a fever. If it burns above 41 ℃, it is an ultra-high heat. It is said that the highest temperature recorded by human beings is 49 ° C. if we can still live, we must thank God.
Why do you have a fever?
Why does a person have a fever? This also starts with the self-regulation of body temperature.
1. Human body’s temperature regulation system
Human skeletal muscle and liver are the main heat generating organs, while skin is the main heat radiating organ. The human brain has a temperature regulation center, which constantly sends instructions to coordinate the heat production and dissipation of the two organs, and keeps the temperature within a narrow range of 36.2 ℃ ~ 37.2 ℃, which is conducive to maintaining human health:
What if it’s cold? “Heating basically depends on shaking”, said the brain. If you generate heat through skeletal muscle, you will get hot through shaking.
What if it’s hot? “In the afternoon of hoeing day, sweat drips down the soil.” the brain says that if you open the pores of the skin, you will sweat before you have time to expel heat!
2. What causes fever
“How can people not get sick if they eat grains?” If we eat it badly, let’s not say for the time being. The human body will indeed be affected by various diseases. Viruses, bacteria, ah, often like to drill into the human body to complete their task of procreation. They will produce some things before or after death. We call them “exogenous pyrogens”, which are foreign “bad guys” who cause fever.
After they invade, the human body must resist. White blood cells produce a bunch of cytokines to attack them. Unfortunately, many of these cytokines can also cause fever, which is called “endogenous pyrogen”. Tumors and other diseases also produce these endogenous pyrogens themselves. After the brain is stimulated by these pyrogens, it’s like doping. Hey! It raised the body temperature.
3. How does your temperature rise
Heat production increases and heat dissipation decreases. The liver is a big factory of the human body. After doping, workers work overtime, metabolism is vigorous, and heat production is greatly increased; At this time, skeletal muscle produces relatively little heat, unless you are “shivering” (shivering); Then, the heat dissipation speed of the skin can’t keep up with it, and even closes the pores (it thinks it’s cold when it shivers). In this way, a fever occurred.
is it really a good thing to have a fever
There is a rumor on the Internet that fever is a good thing and should be allowed to occur. Is that really the case?
benefits: it shows that the body is removing pathogenic bacteria
Stimulated by pyrogens, the body is like a stimulant, which not only raises the body temperature, but also mobilizes the immune system in the body. The cells and body fluids of the whole body are mobilized to eat and kill the foreign pathogens that should be eaten and killed, and the ones that cannot be killed will also make you grow poorly (the suitable temperature for bacterial growth is generally 35 ℃ ~ 37 ℃).
Therefore, it is beneficial to have a fever to a certain extent. You can eliminate the pathogenic bacteria in your body without the help of foreign drugs, and the problem will be solved in a short time.
disadvantages: fever lasts too long, body consumption is too great, and there is danger.
However, you can’t keep your body in a fever. It’s like beating too many stimulants for a long time, which consumes a lot of logistics supplies and produces a lot of garbage that can’t be removed. At this time, the combat capability of the defense forces gradually declined.
For too long, the brain not only could not command the troops, but also hoarsely exhausted for a long time, and finally entered a state of suppression coma. However, children may even have febrile convulsions because their brain functions are not perfect. These situations are very dangerous. We must seek medical help in time.
how to deal with fever
First of all, it is necessary to measure body temperature correctly and record the changes of body temperature every day, especially the highest body temperature. This record will be a good helper for doctors when they visit a doctor.
Before taking your temperature, you can’t eat, walk and other exercises, and stay indoors quietly for more than half an hour. The temperature measured in this way is the real temperature. Compared with armpit temperature, which is affected by sweating, the temperature obtained by measuring mouth temperature is more accurate. Throw the mercury surface of the sterilized thermometer below 35 ℃, then put the head of the thermometer under your tongue, close your lips tightly, and see how much the mercury rises after 5 minutes. Since the body temperature of normal people varies at different times of the day, you can take it several times, or when you feel your body temperature is the highest. The highest body temperature every day is the most valuable for judging the condition.
how to deal with fever correctly
1. Take cold medicine: if you just have a fever, have runny nose, stuffy nose, sneeze and other symptoms, and your temperature is very high, you can use some cold medicine appropriately. Just eat it when you feel uncomfortable. Don’t eat regularly and don’t overdose.
2. Drink more water: if you only have an acute fever (less than 2 weeks), without other symptoms (such as severe cough, expectoration of pus, headache, etc. – these are often signals that the body can’t process by itself), you can wait and see first, and drink more water (to help the defense forces work). However, it is still recommended to see a doctor as soon as possible.
3. Seek medical treatment as soon as possible: if your fever lasts for more than 3 weeks, and your temperature exceeds 38.3 ℃ for many times, and the doctor cannot tell you what the diagnosis is after at least one week’s preliminary examination, I can only regret to tell you that it is “fever to be examined”. This is a very challenging kind of disease in medicine. You need an experienced doctor to check your symptoms (at this time, it is not the right medicine). Even in the end, it may not be clear. All you can do is cooperate with the doctor.
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