What is the cause of baby asthma? Symptoms of infantile asthma.

1 What is asthma? Asthma is a chronic disease, a chronic inflammation and allergic reaction of bronchi. In other words, asthma is also an allergic disease. Allergy refers to the inappropriate reaction of organisms to foreign substances (allergens). When allergens interact with antibodies in vivo, edema and inflammation may occur in human organs and tissues, and the smooth muscle of muscles contracts and spasms, thus leading to a series of different diseases.

Asthma is a reaction of smooth muscle contraction, mucosal swelling, secretion increase and inflammatory cell infiltration after the trachea is stimulated by allergens or non-allergens (such as second-hand smoke and indoor and outdoor air pollution). In addition, asthma patients may often suffer from other allergic diseases, such as allergic rhinitis, allergic conjunctivitis, food allergy and skin allergy (atopic dermatitis, urticaria).

The inflammation of the trachea of asthma patients is just like the inflammation of the wound on the skin surface, which will cause swelling, redness and mucus secretion. The trachea of asthma patients is in this inflammatory state for a long time.

When the sensitive and inflamed trachea is stimulated, just like a scabbed wound is cut again, the body will automatically secrete more mucus to protect the wound. Coupled with the muscle contraction of bronchial wall, it will lead to severe airway obstruction, causing symptoms such as cough, wheezing, chest tightness and dyspnea, which is called asthma attack.

2 Symptoms of wheezing in infants The symptoms of wheezing vary from person to person and every time. There are also many diseases whose symptoms are very similar to wheezing, such as upper respiratory virus infection. The main symptoms of asthma include:

1. Shortness of breath and dyspnea.

2. Breathe.

3. Cough, sometimes phlegm, sometimes sneezing, runny nose and chronic cough.

4. Chest tightness, chest tightness.

5. Cough at night for more than 3 days a week.

Is it a cold or asthma?

If it is a cold, most of the symptoms appear in a certain process, often accompanied by obvious sore throat, which will get better within 1 week on average; If it is bronchial allergy, it is possible that during the day, the child does not have any symptoms such as cough, sore throat and excessive phlegm, but when it is cold in the middle of the night, he begins to cough repeatedly.

What is the cause of baby asthma? Etiology 1: Is hereditary asthma related to heredity? If parents don't have asthma, children won't have asthma?

It is known that asthma is related to heredity. If one parent suffers from asthma, then the probability of children suffering from asthma is indeed higher.

Newborns are more likely to suffer from allergy-related diseases such as asthma in the future if the content of immunoglobulin in umbilical cord blood is high and the IGE in umbilical cord blood is ≧ 0.9 iu/ml.

There may be different ways of inheritance, for example, some people in a family have asthma, some people have allergic rhinitis, and some people have atopic dermatitis. Allergy may be passed on to the next generation or atavism, so parents don't have it, which doesn't mean children don't have allergies.

If asthma is related to heredity, what can pregnant mommy do during pregnancy to prevent the baby from suffering from asthma after birth?

Pregnancy or long-term exposure to air pollution will increase the risk of asthma. So far, there is not enough data to support that the mother's diet during pregnancy or lactation can prevent the baby from suffering from asthma or allergic diseases. The most important thing is to maintain a balanced and healthy diet

In addition, if pregnant mommy herself is an asthmatic, if she has asthma attack during pregnancy, she must use professional drugs or sprays given by doctors. Otherwise, when pregnant mommy has asthma attack, the blood oxygen concentration will decrease, which will lead to the baby's lack of oxygen in the abdomen, which is very dangerous!

Psychological factors are one of the causes of asthma attacks, and the depression of mothers during pregnancy and postpartum may play a role in childhood asthma. In addition, the life stress that family members and primary caregivers encounter when sick children are 1 year-old may be related to the baby's allergies and wheezing, as well as 6? Asthma between the ages of 8 is also related.

Reason 2: Indoor and outdoor air pollution If the common inhaled allergens that induce hereditary allergic asthma in infants are divided into indoor and outdoor, the main indoor allergens include: dust mites, dog and cat dander, mold, cockroaches, pollen, perfume, paint and decoration materials (including formaldehyde), chlorine gas in indoor swimming pools, etc.

Therefore, if there are children with asthma at home, we should actively keep the home environment clean and tidy, put an end to the breeding of cockroaches and molds, and at the same time avoid excessive decoration and eliminate the volatilization of chemicals in the air.

In recent years, the air pollution has increased sharply, the indoor environment has been westernized, everyone wants to be soft and comfortable, save energy, and the ventilation of family houses is not smooth, which makes the concentrations of air pollutants and allergens (especially dust mites) gradually accumulate and remain high, leading to the increase in the severity and number of allergic asthma year by year, greatly increasing the number of dangerous patients who have the opportunity to die of allergic asthma.

Excessive increase of air pollutants will not only make healthy people with normal immunity prone to respiratory diseases, but also do more harm to patients with respiratory allergies with immune deviation than normal people!

Fight dust mites and mold at home!

Dust mites and molds are one of the main allergens that induce asthma. Dust mites are very small arthropods and can only be seen with a microscope. They are usually invisible to the naked eye. They mainly feed on human or animal skins. They are usually distributed in carpets and beds in indoor environments. Parents are advised to avoid using quilts, goose down quilts or blankets when choosing bedding. Because of the high humidity in Taiwan Province Province, such quilt materials are easy to breed dust mites and molds and inhibit dust mites. In addition, heavy curtains and tatami are not easy to clean, and it is easy to accumulate a lot of dust mites, which should be avoided as much as possible.

Etiology 3: Food is also one of the ingredients that can cause allergies and induce allergic attacks. Allergic children's allergic reaction to food will produce various symptoms and may spread to all parts of the body.

For example, in the respiratory system, food allergies can lead to asthma, nose allergies and eye allergies. Compared with ordinary children, asthmatic children are more sensitive to bronchi, including the reaction to temperature. If a person with sensitive trachea eats a lot of cold food at a time, when the cold food passes through the esophagus, the temperature of one trachea will decrease, which will cause bronchial contraction.

A transnational study found that the proportion of children with asthma who drink ice water causes symptoms is 63% in the east, while only 9% in the west. This difference may be due to the differences in physical fitness and eating habits between the East and the West. So in foreign countries, there is no saying that you can't eat ice without asthma, but for people in Taiwan Province Province, you may need to be more cautious. If you really want to drink ice products, you should also be careful not to drink too much, and avoid drinking a lot of ice water when you are panting like a cow after exercise.

In addition to ice products, you should also avoid eating too many processed foods or drinks (including preservatives and pigments) on weekdays, such as chocolate, biscuits, candy, sausages, ham, hot dogs, canned food, etc., which may easily lead to inflammatory reactions.

Etiology 4: respiratory virus infection with mycoplasma pneumonia, bronchial inflammation, respiratory virus infection, etc. Can induce or aggravate the asthma attack of sick children; Therefore, in addition to paying attention to a balanced diet and regular exercise to enhance immunity, children with asthma should avoid going to closed public places, wear masks and wash their hands frequently during the epidemic of respiratory virus infection.

Etiology 5: Changes in temperature and humidity, dry and cold weather and seasonal changes (late autumn, early winter or early spring and early summer) can all cause asthma attacks. When the seasons alternate, asthma patients with respiratory allergies are prone to asthma attacks. Too dry or too wet can cause respiratory discomfort. It is recommended to use a dehumidifier, and the humidity should be controlled at 50? Between 60%.

I have asthma at home, so can't I use an air purifier? Why do you need a dehumidifier?

In fact, dehumidifiers are more important than air purifiers. First of all, dust mites are 75% composed of water. Reducing humidity can also reduce the activity and quantity of dust mites and reduce the formation of mold.

Second, the size of dust mites is about 170? 500 microns, 250 wide? 322 microns (1 mm = 1000 microns), dust mites attached to beds or curtains will not disappear except such small molecules that ordinary air purifiers cannot filter.

Cause six: strenuous exercise Generally speaking, if you are not a child with asthma attack, you will encourage him to swim, ride a bike, or climb mountains. Normal exercise can improve children's immunity and physical strength and stabilize asthma. If the child has asthma, it is absolutely forbidden to do strenuous exercise, for example, run fast. If they have asthma attacks during exercise, they must immediately stop their activities and use drugs.

4 diagnosis of asthma The diagnosis of asthma in children under 5 years old should be especially cautious.

Asthma in children under 5 years old is difficult to diagnose. The clinical symptoms of asthma are changeable and nonspecific. Occasional respiratory symptoms, such as wheezing and coughing, are also common in children without asthma.

One of the reasons why it is difficult to diagnose asthma in children under 5 years old is limited respiratory airflow. Sometimes, when instructing children to use respiratory measurement tools in clinic, their understanding or maturity is not enough, and they may not be able to fully understand or use the measurement tools correctly (they must hold their breath for 5 seconds after inhaling, and then bite the instrument completely with their mouths to exhale), which makes it difficult to diagnose the tools.

The diagnosis of asthma in children under 5 years old mainly depends on clinical judgment, symptom evaluation and parents' description of the child's condition at the time of onset. For example, if you cough for more than three days in a row, especially in the morning, at night and when the weather is cold, it is probably a symptom of asthma, and not all asthma can be heard clearly.

Because most children with asthma are allergic, they will also know their family history of allergies and whether they have other allergic symptoms.

"Most asthmatic children may be accompanied by allergic symptoms in infancy, such as atopic dermatitis, allergic rhinitis and food allergies. Generally speaking, allergic children's allergic reactions often appear in the skin and intestines at birth, and respiratory allergic reactions may begin at the age of 3. However, whether it is the pathological characteristics of asthma such as respiratory inflammation is actually difficult to make a routine assessment at this age.