What is the cause of persistent fever?

What is the cause of persistent fever?

The basal body temperature of normal children is 36.9℃~37.5℃. Generally, when the body temperature exceeds the basal body temperature of 65438 0℃, fever can be considered. Low fever means that the body temperature fluctuates around 38℃, and high fever means that the body temperature is above 39℃. Persistent fever for more than two weeks is called long-term fever. What is the cause of persistent fever? Let me tell you something.

What is the cause of persistent fever? 1. Sudden rise of body temperature: The body temperature reaches 39 ~ 40℃ or above within a few hours, often accompanied by chills. Children are prone to convulsions. It is found in malaria, lobar pneumonia, septicemia, influenza, acute pyelonephritis, blood transfusion or some drug reactions.

2. Slow-rising body temperature type: the body temperature gradually rises to a peak in a few days, and there is no chills. Such as typhoid, tuberculosis and brucellosis.

The duration of high fever will be different for different reasons. For example, malaria can last for hours, lobar pneumonia and influenza can last for days, and typhoid fever can last for weeks.

4, sudden drop in body temperature: refers to the rapid drop in body temperature to normal within a few hours, sometimes slightly lower than normal, often accompanied by sweating. Common in malaria, acute pyelonephritis, lobar pneumonia and transfusion reaction.

5. The gradual decrease of body temperature means that the body temperature gradually drops to normal within a few days, such as typhoid fever and rheumatic fever.

6. Heat leakage means that the body temperature is maintained at a high level above 39 ~ 40℃ for several days or weeks, and the fluctuation range of the body temperature within 24 hours does not exceed 65438 0℃. It is common in lobar pneumonia, typhus and typhoid fever (figure 1-4- 1).

7. Relaxation fever means that the body temperature is often above 39℃, with a large fluctuation range, and the fluctuation range exceeds 2℃ within 24 hours, but it is above the normal level. Common in septicemia, rheumatic fever, severe pulmonary tuberculosis and suppurative inflammation.

8. Intermittent fever means that the body temperature suddenly rises to the peak for several hours, and then rapidly drops to the normal level. The non-hot period (intermittent period) can last 1 day to several days, so the high fever period and the non-hot period appear alternately. Common in malaria, acute pyelonephritis, etc.

9. Wave fever means that the body temperature gradually rises above 39℃, then gradually drops to the normal level after a few days, and then gradually rises again after a few days, and so on. Common in brucellosis.

10, relapsing fever means that the body temperature rises sharply to 39DC or above, and then suddenly drops to the normal level after a few days. The high fever period and no fever period last for several days each, alternating regularly. Visible in relapsing fever, Hodgkin's disease and so on.

1 1, irregular fever refers to the irregular temperature curve of fever, which can be seen in tuberculosis, rheumatic fever, bronchopneumonia, exudative pleurisy, etc.

12, chills are common in lobar pneumonia, septicemia, acute cholecystitis, acute pyelonephritis, epidemic cerebrospinal meningitis, malaria, leptospirosis, drug fever, acute hemolysis or transfusion reaction.

Conjunctival congestion is common in measles, epidemic hemorrhagic fever, typhus and leptospirosis.

14. Oral herpes simplex mostly occurs in acute febrile diseases, such as lobar pneumonia, epidemic cerebrospinal meningitis, vivax malaria and influenza.

15, lymphadenopathy is common in infectious mononucleosis, rubella, lymph node tuberculosis, focal suppurative infection, filariasis, leukemia, lymphoma, metastatic cancer, etc.

16, hepatosplenomegaly is common in infectious mononucleosis, viral hepatitis, hepatobiliary tract infection, brucellosis, malaria, connective tissue disease, leukemia, lymphoma, leishmaniasis and acute schistosomiasis.

17. Hemorrhagic fever with skin and mucous membrane bleeding can be seen in severe infections and some acute infectious diseases, such as epidemic hemorrhagic fever, viral hepatitis, typhus and septicemia. It can also be seen in some blood diseases, such as acute leukemia, severe aplastic anemia and malignant histiocytosis.

18, joint swelling and pain are common in sepsis, scarlet fever, brucellosis, rheumatic fever, connective tissue disease, gout, etc.

19, rash is common in measles, scarlet fever, rubella, chickenpox, typhus, rheumatic fever, connective tissue disease, drug fever, etc.

20, coma after fever is common in Japanese encephalitis, typhus, epidemic cerebrospinal meningitis, toxic dysentery, heatstroke and so on. The first fever in coma is seen in cerebral hemorrhage and barbiturate poisoning.

However, we must pay attention to the following points: ① Because of the wide application of antibiotics, the infection is controlled in time, or because of the application of antipyretics or glucocorticoids, the characteristic heat patterns of some diseases may become atypical or irregular; ② Heat type is also related to the strength of individual reaction. For example, shock pneumonia in the elderly may have only low fever or no fever, rather than typical heat pneumonia.

What should I do if my child has a fever? 1. If the child only has a fever, it doesn't exceed 38 degrees 5, and there is no other discomfort, don't worry too much. You can give your child physical cooling measures first, and then give your child antipyretics and anti-inflammatory drugs (preferably special drugs for children), drink more water and drink more. It is normal to have a fever for 3 to 5 days. No child will have a fever for a day, and there will be a process.

2, if the child has a fever of more than 38 degrees, 5, drink antipyretics, after several times (usually once every 4 hours), the fever still does not drop. It is most necessary to go to the hospital for examination. If the child has no other discomfort, the blood test will have a high blood picture, usually a bacterial infection. You can get a small injection first, and the fever will be better. Try not to choose infusion bottles. Too many infusion bottles will affect children's immunity. Take antipyretics and anti-inflammatory drugs after injection.

3. When the child's fever exceeds 38.5 degrees, it is probably caused by virus infection. So at this time, it is necessary to prescribe some drugs for viral diseases for children, preferably with antipyretics and anti-inflammatory drugs. If the child still has a fever for two days, go to the hospital for examination.

4, sometimes the child has a fever, but not a high fever, always around 37 degrees to 38 degrees. It doesn't matter if you take medicine or have an injection, you should consider whether the child is greatly frightened. It's best to ask a doctor to massage the acupoints on the head, or parents should have a good coax. There are also toys that can distract the child's attention and make him laugh happily, and the fever will gradually improve.

One reason why children don't have a fever is that their immunity is relatively low, and they have been fighting germs for a long time, but they can still work. Therefore, parents should not be too flustered when their children have a low fever or a high fever. First, give your child plenty of water, followed by physical cooling measures, and finally take medicine and injections. This will help the baby's own resistance to overcome germs, and his resistance will become higher and higher.

What should I do if my child has a fever? When a child has a fever and a high fever, parents can take some measures to cool the child down.

1, clothing and quilt reduction

Remember not to wear too many clothes and cover your child with a thick quilt when you have a fever. This traditional method of covering sweat is not conducive to heat dissipation and fever reduction, but will lead to febrile convulsions due to overheating. For many small treasures, as long as they reduce their clothes, they can lower their body temperature.

Step 2 drink plenty of water

Conducive to sweating and heat dissipation, in addition, water has the function of regulating temperature, which can lower the body temperature and replenish the water lost by the body.

3, cold compress method

This method is simple and easy. Apply a cold towel to your forehead. When the towel gets hot, soak it in cold water and reapply it. For older children, it is best to apply cold water bags or ice bags.

4, the whole body warm water bath or bath.

Untie children's clothes, wipe the whole body with warm water (about 37℃) towel or take a bath, which can expand skin blood vessels and increase heat dissipation; In addition, when water evaporates from the body surface, it also loses some heat.

5. Warm alcohol bath

Alcohol bath 70% alcohol is mixed with tap water11,and the diluted water temperature is about 37℃? 40℃, put in a small bowl. When taking a bath, close the doors and windows, dip the alcohol in the bowl with gauze or soft towel, wipe the child's palms, soles, armpits, inner upper arms and thighs, and then wipe the limbs and back. Can't directly wipe with alcohol, this method is not suitable for infants under 1 year.

Precautions for children's illness and fever It doesn't matter if the body temperature is lower than 1 and 38.5℃, but it can't be taken lightly. It is necessary to observe the child's mental state at any time, measure the child's temperature at any time, and often feed the child with water. Don't dress the children too much. To keep the room ventilated, the baby should prepare antipyretics at home after 6 months.

2. The temperature is 38.5℃? Between 39.5℃, take antipyretics according to the instructions. After taking the medicine 10 minutes, add clothes to the child. After half an hour, take off these extra clothes and wipe them with warm water. You will see that the sweat will come out immediately, and the child's temperature will slowly drop at this time.

3, fever itself is the virus in the child, and the child itself is resisting the virus, which can't solve the problem at one time. 4? The temperature will rise again in 6 hours, and we can continue the previous step.

4. Foundation 4? After six times, the child's temperature was under control.

If the fever is above 39.5℃, you must go to the hospital. It will not cause damage to the brain within 8 hours, but the longer it takes, the worse it will be for the child. At this time, you can wipe your child's palms and soles with alcohol, but you can't wipe more. This method can quickly cool down. If there is no alcohol, you can directly wipe your child's body with tap water, and then go to the hospital immediately.

What food does a child with a fever (1) eat?

Milk can supplement a certain amount of protein for children, and adding some rice soup can supplement some carbohydrates.

(2) Rice soup

Rice soup can supplement carbohydrates to children, and it is full of water, which is convenient for the absorption of sick children's intestines and stomach. Boil the rice and remove the residue to get rice soup.

(3) Mung bean soup

Mung beans are benign and have the functions of clearing away heat and toxic materials and relieving summer heat.

(4) Fresh fruit juice

Freshly squeezed fruit juice is mainly composed of vitamins, minerals and carbohydrates, and contains only a small amount of plant protein, which is easy to absorb. You can drink watermelon juice in summer, which has the functions of clearing away heat and relieving summer heat, quenching thirst and diuresis. You can drink fresh pear juice in autumn and winter, which has the functions of moistening lung and clearing heart, relieving cough and resolving phlegm. Fresh orange juice has the functions of eliminating dampness, resolving phlegm, clearing lung-heat and dredging collaterals.

Semi-liquid foods that children can eat with fever include lotus root starch, milk powder substitutes, porridge, eggs and rotten noodles.

It is worth noting that liquid food is generally eaten in the acute stage of onset, and semi-liquid food is eaten in the recovery period or fever reduction period.

What drinks should I not drink when I have a fever? Don't drink high-sugar drinks or strong tea when you have a fever. If you have a high fever, even cola and juice will increase your body's calories and aggravate your fever symptoms. As for barley tea and green tea, you can drink some, but you should also pay attention to moderation. It's best not to drink anything, but to drink more boiled water.

1, avoid drinking strong tea.

Strong tea can keep the brain excited, speed up the pulse, raise blood pressure, and then raise the patient's body temperature and make him fidgety. At the same time, tea will affect the decomposition and absorption of drugs and reduce the curative effect of drugs.

2. Avoid drinking more cold drinks

If it is a fever caused by infectious diseases such as bacillary dysentery caused by unclean food, the gastrointestinal function will decline, and drinking more cold drinks will aggravate the condition, even aggravate it and endanger life.

3, avoid eating more honey

During the period of fever, heat should be given priority to, not nourishing. Honey is a tonic for invigorating qi and strengthening the middle energizer. If you eat too much honey, the patient's internal heat can't be cleaned and eliminated well, and it is easy to be complicated with other diseases.

When you have a fever, you can try some herbal teas, such as thyme, chamomile and other Chinese herbal medicines with bactericidal, anti-inflammatory and sweating effects. Use them to make hot tea and drink it while it is hot, which has a good effect on reducing fever and dissipating heat.

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