Why when we are sick, sometimes the body temperature rises

Humans are homeothermic animals, and an increase in body temperature is known as fever.

It has to do with your immune system.

Your immune system is your body's defense system. It also protects you from harmful microorganisms, called pathogens. The immune system will usually destroy the pathogen without causing much disruption to you, but every once in a while, the pathogen will take over and your immune system will have to take a bigger countermeasure.

These countermeasures are often compelling. You may notice feeling tired or losing your appetite when you are sick. Both of these things are when your immune system reaches a new length to protect your body from invaders.

An increase in body temperature caused by an infection is called a fever. Fever is a systemic immune impulse reaction caused by the release of pyrogens from key immune cells. The increase in temperature causes certain immune cells to attach to the walls of blood vessels, allowing them to reach the site of infection more quickly.

Fever-related is the temporary removal of minerals such as iron and zinc from the blood. Your body does this in order to deprive bacteria of the important compounds it needs to spread to infection. Elevated temperatures can also speed up the repair of your own cells and make it difficult for temperature-sensitive pathogens to grow.

The key is to make sure that the temperature is not so high that it damages your cells.

When you have a cold, your lungs will become inflamed.

Other organs can also have inflammation.

It is body heat caused by inflammation.

That's why there is a fever.

When a person is sick, the body temperature tends to rise, and the symptoms of fever (fever) appear. Fever is a common symptom of many diseases, and it is necessary to distinguish which disease causes the fever, mainly from the characteristics of the fever, the level of fever, the duration of the fever and other accompanying symptoms. 1.

High fever persists for several days with rash, and in winter and spring, if it is a child, it should be considered measles and chickenpox. 2 If the high fever persists for several days accompanied by a rash, and the fluctuation of body temperature does not exceed 1 Celsius in one day, it should be considered to be an acute infectious disease such as typhoid, paratyphoid, and typhus. 3. Fever accompanied by cough, chest pain, pharyngeal and conjunctival hyperemia should be considered as acute upper respiratory tract infection (epidemic, bronchitis), pneumonia, acute tonsillitis, tuberculosis, and lung abscess.

4 If fever is accompanied by diarrhea, food poisoning, bacillary dysentery and amoebic dysentery should be considered. 5 Fever accompanied by pain in the right upper quadrant should be considered cholecystitis, cholelithiasis, acute purulent cholangitis, bacterial liver abscess, and amoebic liver abscess. 6 Fever accompanied by pain in the left upper abdomen should be considered as acute pancreatitis, perisplenitis, and splenic abscess.

7. Fever accompanied by pain in the left and right lower abdomen, and suspicion of appendiceal abscess, acute salpingitis, and pelvic peritonitis. 8 High fever with abdominal pain, abdominal tenderness, and abdominal muscle tension should be considered acute peritonitis. 9 High fever accompanied by low back and rib pain should be considered to be acute pyelonephritis, periphritis, or perirenal abscess.

10 Intermittent fever, regular episodes, with chills, high fever, and profuse sweating, should be considered malaria. 11 Fever with bleeding (hemoptysis, hematochezia, hematuria, bleeding gums) should be considered epidemic haemorrhagic fever, leptospirosis, and hematologic disorders. 12 Drug fever may occur when taking sulfonamides, antibiotics, iodine, atropine, belladonna, barbiturates, etc.

After the onset of fever symptoms, the patient should be given bed rest, eat a liquid or semi-liquid diet (porridge, rice soup, soy milk, milk), and drink plenty of fluids. If the fever does not go away, you can wipe the whole body with warm water or alcohol. Until the cause of the fever is understood, antipyretic analgesics should not be taken indiscriminately.

For example, if a patient with acute peritonitis is given antipyretic analgesics, the pain is reduced, but it often masks the condition and causes misdiagnosis. On the other hand, fever in the human body is not entirely a bad thing. Fever is a self-protection measure for the human body.

When pathogenic microorganisms invade the body, the body responds by raising the body temperature (fever). When the body temperature rises, the metabolism strengthens and the number of white blood cells in the blood also increases significantly. This defensive army surrounded the bacteria and put the whole organism on "alert".

Therefore, fever not only gives us a signal to make a timely diagnosis**, but also helps the body to defeat the disease. After clarifying the cause of the fever, and then rationally using the medicine for the cause of the fever, you can receive the effect of medicine to eliminate the disease.

When people are sick, the manifestation of the symptoms of writing illness is an increase in body temperature, which is what we often call "fever"; Why do I have a fever?

The human body itself has a well-established immune system; When external germs and viruses invade, the immune system will activate at the first time and secrete antibodies to resist the invasion of foreign enemies. At the same time, raising body temperature is also a way to kill pathogens, so the immune system will raise the body's body temperature.

If you are sick first, there will be a release of pyrogens in the body, and if you are sick secondly, the body's thermoregulatory center will increase the thermoregulatory point under the action of pyrogens, so when you are sick, your body temperature will rise.

First, it is mainly due to physical weakness and weakened disease resistance. When the climate changes drastically, due to the inability of the internal and external functions of the human body to adapt, evil qi enters from the skin, mouth and nose, causing a series of fever symptoms.

2. Fever refers to the situation in which pyrogens directly act on the thermoregulatory center, and the body temperature center is dysfunctional or causes excessive heat production and reduced heat dissipation caused by various reasons, resulting in an increase in body temperature beyond the normal range. Cold and fever are both beneficial and harmful to the human body, and the body's immune function is significantly enhanced when there is a fever, which is conducive to the removal of pathogens and the promotion of disease healing. Therefore, there is no need to use antipyretics when the body temperature is not too high, just pay close attention to the changes in body temperature, and when the temperature exceeds the degree, you should take antipyretics in time.

There are differences in body temperature between men and women in the morning and evening, in all parts of the human body, and between men and women. There is a relatively stable range of normal body temperature, but it is not constant. In a normal person, the oral temperature (also known as oral temperature) is lower than the axillary temperature and the rectal temperature (also known as anal temperature) is higher than the oral temperature.

During the day, the temperature is lowest at 2 to 5 in the morning and highest at 5 to 7 in the afternoon, but the temperature difference should be less than during the day. In addition, women's body temperature is generally higher than that of men. A woman's body temperature also changes slightly during menstruation.

In a healthy state, such as eating normally and dressing appropriately, the body temperature of the human body is generally relatively constant, that is, it is kept around 37 (roughly between, and does not change due to changes in the temperature of the external environment. The average normal body temperature of the human body is between 36 and 37 (armpits), beyond this range is fever, below 38 is a low fever, and above 39 is a high fever.