With regard to medical matters, whenever a layman says something, it is not to be believed, no matter how many people agree with that opinion. A fever seems to be very simple, but when it comes down to it, it is very complicated. Let's start with a less rigorous example, let's say the average person's common cold caused by fever, no other diseases and complications. Here only discuss this case fever with cover sweat or ice packs which is right? The answer is neither. Fever-reducing measures are only to make people feel comfortable, fever-reducing i.e. will not make you get well faster, nor will it make you less likely to have other problems, this is the premise. Since fever-reducing measures are meant to make people feel comfortable, you will understand which is the right thing to do when you have a fever: to cover your sweat or to put ice packs on your body. The correct answer is:Cover sweat when you feel cold and ice when you feel hot. Either way, whatever makes you feel better. Another correction, not Western medicine to ice packs, Chinese people also have a cold towel on the forehead of the habit. Don't take your own feeling and say what I said is nonsense. Go and consult a medical expert before you speak, this is a professional medical issue, say it wrong, others read it, it will make a lot of people victimized. At least I asked for advice before I said anything.

Regardless of who is right and who is wrong, let's think about the common sense problem that occurs when theWhat do you do when you want to keep something warm?

A. Give it a constant cool flush;

B. What about wrapping more stuff around the outside for it.

At this point, everyone will surely choose B without a second thought, so why does it happen to people who can't figure it out?

Fever cover sweat cover is not sweat! It is a Chinese folk remedy with no scientific basis!

So why do some people show signs of fever reduction after covering their sweat? The truth is that even if you do not cover, after three to five hours through their own immune activation, the fever is also receding, in the receding fever at the same time there will be a sweaty performance.

So this.Sweat is not covered, but is a sign of your own immunity overcoming bacteria and viruses!

How should a fever be handled correctly? It should be handled differently at different times of fever.

Before we answer that question, let's talk about the mechanism of fever.

Fever is a very common phenomenon, and although the causes of fever are different, the mechanism of fever is the same.

The whole heat generation process is divided into

1. Period of rising body temperature

When a pathogen infects an organism, the organism releases an endogenous thermogenic source that acts on the thermoregulatory center in the brain, which releases a large number of mediators that cause a change in the thermoregulatory point, resulting in vasoconstriction of the skin vessels and a decrease in superficial blood flow.Symptoms of pale skin and cold extremities;

At the same time, due to the decrease in heat dissipation from the skin, the cold receptors in the skin are stimulated and transmitted to the center causing chills. The center sends out impulses which are then transmitted to the motor end plates through the motor nerves, causing involuntary contraction of the skeletal muscles and chills, which increases heat production, and heat production is greater than heat dissipation in this period, so the body temperature rises.

2. Period of high fever

During this period, the body temperature has reached or is higher than the level of the upwardly shifted thermoregulatory point, and the thermoregulatory center no longer sends out chilling impulses, so the chills disappear.

At the same time the skin blood vessels switch from constriction to diastole, causing theRedness and burning sensation of the skin, stimulation of the sweat glands to start sweating and gradually increasing. Keeps the heat production and heat dissipation processes relatively balanced at a high level.

3. Period of falling body temperature

During this period, due to the activation of autoimmunity, elimination of pathogens and inflammatory mediators in the body, the role of endogenous thermogenic sources gradually weakened or disappeared, the thermoregulation point of the body temperature center gradually dropped to the normal level, the relative reduction of heat production, heat dissipation is greater than the heat production, so that the body temperature dropped to the normal level. Therefore, this period is characterized by excessive sweating and moist skin.

When symptoms of fever are present, different treatments can be given depending on the different periods mentioned above.

clinical phaseYou can wrap cold and chilled areas such as hands and feet in hot water, hot towels, and quilts;

feverish periodAggressive heat management is then required, including warm baths and the use of ice packs bilaterally on the neck, armpits, thigh roots, and other areas where large arteries pulsate.

On this question, China Science Expo invited a doctor from Peking University Medical College to answer:

Let's start with the fever.

The normal body temperature (axillary temperature) of the human body is 36-37 degrees Celsius, and the body of a healthy person can automatically regulate the body temperature to maintain it within the normal range. Under the action of thermogenic sources (bacteria, viruses, etc.), the body temperature regulating point is shifted upward, and when the body temperature rises more than 0.5 degrees Celsius of the normal value, it is fever, i.e., fever.

The most common cause of fever is infection. Bacteria, viruses and so on into the human body, the body in order to protect itself, start the immune system to destroy the invaders, because a certain degree of fever can help the body to destroy the invading bacteria and viruses, strengthen the defenses, so the body's immune system will produce some substances to make the thermoregulation point upward, so that the body to produce heat is greater than the dissipation of heat, the body temperature will rise to the thermoregulation point and then maintain a relatively high temperature, which leads to a fever.

When the immune system is victorious and repels the invaders, the body, which has consumed too much energy, begins to cool down rapidly, when the thermoregulation point returns to normal, the body dissipates more heat than it produces, and during the period of time when the body temperature is falling to normal, our body sweats a lot and carries away a lot of heat.

But sometimes the war between the immune system and bacterial viruses goes on for too long, and overly persistent fever is so hostile that it can harm our vital organs and central nervous system; prolonged high temperatures increase heartbeat and respiration, and body metabolism, coupled with a high fever that causes us to lose our appetite, leading to a large amount of energy consumption and insufficient replenishment of the human body; and small children aged 6 months to 6 years old are also at risk of developing hyperthermic convulsions.

What should you do when you have a fever? Cold compresses or sweating?

For fever, there is no such thing as the most flawless general formula in this world, only what works best for you.

It is already hard to have a fever, using ice to apply cold compresses may make us feel even worse. Cold compresses constrict the blood vessels in the skin, instead, it is also not conducive to heat dissipation.

From the fever mechanism, cold compress cooling is the opposite, even if a moment to force the body temperature down to the normal range, but the body temperature set point did not fall, will only cause the body more serious heat production.

However, in patients with persistent hyperthermia, excessive body temperature can damage the central nervous system, and cold compresses on the head to cool the body can help protect the brain.

And does covering sweat with a blanket help?

When your body temperature is consistently hot, do we think you won't be bored or uncomfortable with another layer of covers?

When the body temperature rises to the point of regulation, the body reduces heat dissipation and is covered without sweating. While sweating, the body heat dissipation increased, covered with a blanket is not conducive to heat dissipation. Especially for infants and young children under one year old, covered for a long time may lead to muffled fever syndrome, mild dehydration, heavy damage to the central nervous system.

When the body temperature has not risen to the thermoregulation point, we will have cold hands and feet and more than chills, appropriate cover can help us to raise the body temperature and relieve discomfort. However, when the body temperature reaches the thermoregulation point, there is no need to cover the heat when it is persistently high.

And fevers don't need to be reduced immediately. The latest guidelines of the American Academy of Pediatrics point out that if the child does not have obvious discomfort, healthy children do not need to reduce the fever below 39 ℃, more than 39 ℃ child obvious discomfort before the need to reduce the fever. The Chinese guideline is that fever should be reduced only when it exceeds 38.5℃.

Fever is a common symptom in our daily life. After having a fever, the most important thing is to have a good rest, cover up when you are cold, apply cold compresses when you are too hot, drink more water when you are sweating, and supplement your nutrition in time. Most of the fever can be cured by itself without going to the hospital. If the condition continues to worsen and the body feels very uncomfortable, you should go to the hospital and follow the doctor's instruction.

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This article is produced by Science China; produced by Peking University Medical Science Team; and supervised by the Computer Network Information Center of the Chinese Academy of Sciences.

"Popularization of Science in China" is an authoritative brand of science that the China Association for Science and Technology (CAST), together with all parties in society, uses information technology to carry out science communication.

This is a very good question! I remember when I was a kid, a family cold and fever, parents began to boil ginger soup, after drinking, and then wrapped in a quilt, covered in sweat. You do not say, most of the time, or very effective.

But the memory, also encountered a few times, cold fever, hot, parents as the law, drink ginger candy wrapped in quilts, and finally, people are almost out of breath, rushed to the hospital.

Later, when I grew up a bit, I heard elders say that if you have a cold and a fever, you should cover the sweat; if you have a hot and a fever, you should put ice packs on it.

So, cold fever cover sweat and cold fever ice packs, in the end which practice is right? Today just borrow this issue, and everyone guys talk about it, just for reference.

How is our body temperature regulated?

To put it in very technical terms it is this: our body temperature, which is in theneuroscience和fluidsThe co-regulation of our bodies through thethermogenesis和radiatorprocess to keep it relatively constant.

If we put it in layman's terms it is this: our body temperature, which is stimulated by internal and external temperatures, carries out bodythermogenesis和radiatorthat keeps body temperature at a relatively constant level.

But anyway, there are 2 key words here that need to be explained to the guys, abody heat; the other isBody heat dissipation。

webody heatThe most numerous organ, primarily ourgut, especially the liver, andstriated muscle。

Of these, the internal organs produce about 50 percent or more of our body's heat, while skeletal muscles, at rest, produce about 25 percent of the heat; during exercise, this can rise to more than 75 percent.

Body heat dissipationpathway, mainly through the skin of the body; and the main ways of dissipating heat, areRadiation, conduction, convection, evaporation, which are 4 ways to physically dissipate heat.

Among them.Covering sweat is a form of evaporative cooling; while icing is a form of conductive cooling.

Below, we'll focus on chatting about covering sweat to evaporate heat vs. icing to conduct heat, which is right for a cold and fever and why?

But before we discuss that, we still need to briefly understand why colds are febrile.

When you have a cold, why does your body get hot?

First of all, the cause of both the common cold and the viral cold is primarily a series of cold symptoms caused by viral and/or bacterial infections to the upper respiratory tract.

Secondly, when you have a cold, why do you often have a fever? This is because when our body is infected with viruses and/or bacteria, these viruses and/or bacteria will produce inflammatory factors in the body, which, together with bacterial toxins and metabolites, form the pyrogens in our body, i.e., the thermogenic agents that increase our body's heat production.

When our body produces more heat than our body dissipates, our body temperature constancy is broken, our body temperature begins to rise, and our body begins to run a fever.

Covering the sweat, why does it reduce the fever?

Indeed, what is the rationale behind the habit of us Chinese, especially the older ones, to reduce fever by covering the sweat when the children at home have a cold and fever?

As mentioned earlier, for body temperature to be constant, the body's heat production and heat dissipation must be balanced; if a fever occurs with a cold, indicating that the body's heat production is greater than its heat dissipation, then, in addition to the need to treat the cold for its cause, the most important thing to do is to pass theAccelerated heat dissipation to achieve lower body temperature.

As we have already reviewed, the body dissipates heat in the following main waysRadiation, conduction, convection, evaporation, which are 4 types of physical heat dissipation. Among them.Covering sweat would be a form of evaporative cooling.

Because in general, when in the ambient temperature rises to 25-30 ℃, the secretion of sweat glands of our skin, we began to secrete sweat, and through the conduit to the epidermal sweat pores, so that the sweat evaporates away from the body, which is commonly known as sweating or show sweat.

And cover sweat is to artificially create a high-temperature environment, so that the local environment temperature is higher than the body temperature, accelerate the evaporation of sweat, to achieve rapid heat dissipation, reduce body temperature effect.

Cold compresses, why can they also reduce fever?

It is true that not only do we often see scenes of ice packs to reduce fever in some Western movies and television productions, but also in the fever clinics of our national hospitals, we can often see the practice of medical personnel using cold compresses or ice packs to reduce the temperature of febrile patients.

So what is the rationale for reducing fever through ice?

As mentioned earlier, radiation,conduct (heat, electricity etc), convection, and evaporation, are the four main physical ways our bodies dissipate heat, of which theIce packs would be a conductive way to dissipate heat.

conductive heat dissipationThe principle of this is to transfer excessive heat energy from the body, directly to a lower temperature object in contact with the body (e.g. ice).

It utilizes the temperature difference between the body surface and the contact ice to dissipate heat and cool down the body.

When to cover sweat? When do you use ice?

In summary, bothCovering the sweat to evaporate the heat, or icing to conduct the heat.They are all common physical ways for the body to dissipate heat, and for patients with colds and fevers, as long as they are used appropriately, they can all have a good physical cooling effect.

So, when should you use cover sweat evaporation cooling? When should you use ice packs to conduct heat dissipation and cooling?

1. Cover sweat evaporation and heat dissipation applicable to the condition:If the patient has a cold and fever and feels cold and even has symptoms such as shivering, in this case, it is recommended to cool down by covering the sweat and evaporating the heat.

Of course, you can also use a warm towel, placed on the forehead, armpits, thigh roots, etc., for hot compresses to evaporate and dissipate heat to cool down.

2. Ice conductive heat dissipation applicable conditions:If the patient has a cold and fever and feels hot all over the body, it means that the heat energy to reach the surface of the body and relatively constant, in this case, it is recommended that ice or cold packs can be ice or cold conductive heat dissipation way to cool down the temperature.

Of course, you can also use a cold towel to wipe the armpits, neck and other places, can also play a good cooling effect.

Summarize 1: Radiation, conduction, convection and evaporation are the 4 common physical heat dissipation methods of our body; while covering sweat belongs to the evaporation heat dissipation method; ice belongs to the conduction heat dissipation method.

Summarize 2: When you have a cold and fever and feel cold, it is recommended that you cover your sweat and evaporate the heat to cool down physically; when you have a cold and fever and feel hot, it is recommended that you use ice packs to conduct and dissipate the heat to cool down physically.

Summary 3: Covering sweat vs. icing, both are the right thing to do as long as they are applied to the right symptoms.

Do you agree with me?

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Fever this adverse symptom in daily life is not rare, it is actually the body's normal response to infection, once the fever is found, many people at this time the first time to think of fever, some people will be through the cold compresses to achieve the purpose of fever, while some people are recommended to cover the sweat processing, it is not difficult to find that the two fever practices are completely opposite, in the end, what should be taken to fever good way! The first thing you need to do is to get your hands dirty.

In fact, the operation of covering sweat can not achieve the purpose of fever reduction, on the contrary, excessive covering sweat is not only detrimental to the body's heat dissipation, but will also make the body's body temperature rise in a short period of time. It is generally believed that when the body temperature has not risen to the thermoregulation point, it is appropriate to cover the quilt to raise the body temperature and relieve the discomfort, but for patients with persistent high temperatures, it is not possible to carry out the operation of muffling heat at this time, so as to avoid affecting the dissipation of heat and lead to a higher body temperature.

Ice as a physical cooling therapy, sustained high temperatures may damage the body's central nervous system, this time the operation of cold compresses on the head, not only can achieve the purpose of cooling, but also help to protect the brain. In the ice, we should remember not to cold compress the stomach, and pay attention to grasp the time of ice, generally controlled in about 20 minutes is more appropriate.

Fever can bring a lot of harm to the organism, but we should not blindly reduce fever, but should be combined with the actual situation of their own organism, to take symptomatic measures to solve the problem, if necessary, but also under the guidance of the doctor, to carry out symptomatic treatment, is more scientific.

Instructor: Gao Lingyu, Deputy Chief Physician, Department of Internal Medicine, Jili District People's Hospital, Luoyang, China.

She has been engaged in clinical internal medicine for more than 20 years, and has rich experience in common and frequent diseases in internal medicine.

If you find this article useful, please feel free to like or recommend it to your friends and follow [Medlink Media].

I remember every time I had a fever, my parents would always tell me to drink some ginger water and hide under the covers to cover my sweat. It worked most of the time, but sometimes it didn't bring the fever down.

Usually when a child has a fever, we say that we need to do physical cooling, that is to say, we use alcohol or warm water to wipe her body, because I don't have a child yet, so I don't know if it's good or not. But when I was a child, I vaguely remember that my father used it for me once, that is, using alcohol and warm water, rubbing my arms, head, palms and so on, must use warm water, if the cold water is too cold, it will not be able to stand.

But wherever the middle is, I don't think it's the best way to go.

Fever is actually a process of fighting a war of cells in the body against bad cells, and people are generally advised to heal themselves first and then intervene when it doesn't work.

best way

• The first step is to identify the cause of the fever.

Is the fever caused by a cold or by a virus? If it is caused by cold, drinking hot ginger soup and sweating, that is, we usually say that the cold will be forced out, covering the sweat is OK.

But pay attention to timely replenishment of water and vitamin C. Because sweating will lose a lot of water in the body, a lot of nutrients will also be discharged with the sweat, so it is necessary to timely replenishment, which is the reason that after sweating people are weak and have no strength.

• Next look at the temperature of the burn.

If the fever is within 38°, you can use physical cooling, but if the fever reaches 39° or higher, you must take fever-reducing medication or see a doctor for medical advice. Otherwise causing inflammation of other organs will be more troublesome.

• Finally, seek medical attention if the fever persists without dropping.

If the fever is still not good by taking medicine and physical cooling, and for more than 2 consecutive days, it is recommended to consult a doctor to avoid fever caused by other reasons or viruses, or fever and inflammation transferred to other organs to cause inflammation of other organs.

Regardless of the method, be sure to keep an eye on the temperature and duration of the fever, and seek medical attention if it doesn't work!

[Author: Liu Qian

National Public Dietitian II

Editor of Dalian Dietitians Club, Head of Microclasses

Participants of Wang Xingguo Special Training Course 5]

Late summer and early fall, the change of seasons, a time like this, weak people are prone to colds. Sick fever, the Chinese people used to cover more quilt cover sweat, uttered a sweat on the good, and Westerners believe that fever should be cold with ice packs, these two statements, diametrically opposed, that which is more reasonable?

The normal body temperature of an average person is between 36-37 degrees Celsius. The body of a healthy person can automatically regulate the body temperature to keep it within the normal range. When bacteria or viruses attack the human body, the body in order to protect themselves, the start of the immune system to eliminate these pathogens, the immune system in the elimination of the enemy, but also produce some substances to make the body temperature rise, the body's heat production increased, heat dissipation remains unchanged, which is the so-called "fever". In fact, when the fever is covered sweat or cold compresses, can depend on the individual, not to say that must be covered sweat, also does not necessarily have to cold compresses.

Originally fever has been very difficult, cold compresses will make the skin vasoconstriction, but is not conducive to heat dissipation, can be cold compresses after the surface temperature of the skin temporarily decreased to within the normal range, but the body's heat production is still higher than the heat dissipation, cold compresses after the body temperature immediately rose again. That cold compresses do not make sense? No, when the head for a long time in a high temperature state, cold compresses can help effectively reduce the temperature, protect the brain.

What about covering sweat? Think about your body hot when, plus a thick quilt, you comfortable? Definitely not comfortable, the most appropriate time to cover the sweat, is the body feels cold, at this time there is no body heat, just feel cold, chills more than, this time to cover a cover is good, when the body temperature rises, do not cover again, or the heat can not be dispersed, more trouble.

Therefore, after the fever, the most important thing is to choose according to the body, cold, cover the quilt, hot, apply a pack of ice, adjusted to the body's comfortable temperature is best.

The authoritative interpretation of Pharmaceutical Affairs, unauthorized reproduction, plagiarism will be punished.

I don't know which is right, Chinese medicine's "cover sweat" or Western medicine's "ice pack", but I have a deep understanding of which is better.

When I was a child, my health was not very good, and I often had colds and fevers. But at that time, the medical conditions in the countryside were very poor, and there were no hospitals around at all, so if it wasn't a very serious disease, no one would go all the way to the hospital.

Whenever I had a cold or fever, adults would use the most commonly used rural remedy of "covering sweat" to treat it. Almost every time I covered the sweat, I slept a lot and woke up drenched in sweat. But I was so relieved that the cold had long since disappeared with the sweating.

In fact, covering sweat, is a common folk Chinese medicine treatment for cold and fever.

Later, I learned that covering the sweat is what traditional Chinese medicine often refers to as "relieving the surface". When you have a cold or fever, cover up the quilt and sweat to achieve the purpose of cooling the surface.

In those days, covering the sweat was partly because the rural elderly had this experience. In fact, the main reason, or because of the medical conditions of the limitations, can not get medical treatment and take the approach. But most of the time it did work.

Chinese medicine is profound and has a long history, and has made indelible contributions to the development of China for 5,000 years. Although some of the theories of Chinese medicine are still not recognized by Western medicine, the real therapeutic effect is undeniable.

"The people are the real heroes", and the fact that the treatment has been passed down for thousands of years shows that the therapeutic effect of "covering the sweat" is recognized by the people.

Practice has proved that "covering sweat" is a simple, economical and effective way to reduce fever in traditional Chinese medicine, and it is worthwhile to continue to promote it.

Cold fever is very common, sweating can reduce fever is also correct, but only the kind of pure cold and flu can be covered with a quilt, and still drink a bowl of ginger water, first cold sweat and then hot sweat is considered to be out of the cold table. If the fever is due to storage food, upper respiratory tract infection, pneumonia, no longer apply to cover the sweat.

And then look at the foreigners with ice is simply lack of heart, their theory is to ice the brain not let the head overheating, to prevent high fever brain burned stupid, in fact, ice will only become stupid, because after the ice will certainly form a bruise. The correct approach is to use hot water to throw a towel wrung half-dry wipe the brain and temples around the area, if the upper respiratory tract infection or bronchitis, pneumonia, but also with a hot towel wipe the front and back of the heart, the purpose is to let these core location of the pores open to dissipate the heat, the body temperature will be able to control. And ice will make the pores more closed body temperature more scattered not go down, just a slight decrease in surface temperature, but the body temperature is higher, so the foreigners this set of theories is very stupid and naive, but also can kill people.

Should we cover the sweat or should we ice the fever, the treatments are diametrically opposed, which one is right? Which one is right? Which one should we find which one to deal with? This is the doubt in the minds of many ordinary people, indeed, this is the difference between our traditional concepts and modern medicine. Today, Dr. Zhang to talk about this issue, hope to help you.

First of all, let me state my attitude that it is necessary to use effective ways of heat dissipation after fever, such as cool water baths, alcohol baths and even ice packs. Effective heat dissipation is conducive to the lowering of the body temperature of the organism and helps to protect the central nervous system from hyperthermia. This is the correctly recognized viewpoint of modern science and medicine, so please bear this in mind and never cover up excessively. I remember last year there was a report that a pregnant woman in Shandong died of severe heat stroke due to covering, it is really saddening to see such an incident.

So, is our traditional Chinese saying of covering sweat after a fever completely wrong? Of course, it is important to dissipate heat effectively after a fever develops, but covering the sweat, which is often mentioned in our traditional medicine, is largely designed to allow the patient to sweat it out, as sweating removes heat from the body and helps to cool it down. Traditional medicine also believes that sweating is a precursor to heat loss, so covering the sweat is recommended. The starting point is also to dissipate the heat, as long as the patient does not cover the sweat, resulting in ineffective dissipation of body temperature.

Finally, I hope that you will grasp the correct concept of health, and seek regular medical treatment for any illnesses, and do not make any foolish and ignorant decisions.

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