Sneezing continuously? A runny nose? Rash? Diarrhea? Is the skin itchy and red? Every time the child has the above situation, parents will have a headache because the child may be allergic again. Allergy has become a popular non-communicable disease in today's society, and it has been on the rise compared with the past. So why are children often allergic now? And more and more children are allergic. An interesting conclusion is that immune diseases such as allergies are related to the improvement of sanitary conditions. This conclusion originated from 1989, when British scientist Strachan published a research paper "Pollen Allergy, Hygiene and Family Size". Strachan found that the more children there are in a family, the lower the probability that children are allergic to pollen. So why is this? In this regard, Strachan explained that compared with a family with only one child, the more children there are, the worse the family hygiene conditions will be, so the greater the probability of microorganisms spreading among children, so microorganisms can help children resist allergic diseases. This is the famous "hygiene hypothesis", that is, the less children are exposed to infection in the early stage, the greater the chance of suffering from allergic diseases in the future. Although this study has not been confirmed, the increase of allergic symptoms is indeed closely related to the change of our lifestyle. Let's take a look at several common symptoms of children's allergies.

First, the respiratory system

1, allergic nasal congestion, runny nose

External allergens such as pollen, catkins, dust mites, animal fur and dander can cause allergic symptoms such as stuffy nose, runny nose and sneezing. And with the aggravation of air pollution, babies who are not allergic can easily become allergic because of the immature development of various mechanisms in the body. Therefore, in the season of high allergy, such as spring, try to limit outdoor activities or wear masks when going out. And avoid bask in the quilt in the days when pollen and catkins are abundant, so as not to get allergens on the quilt.

2. allergic cough

Children's allergic cough is one of the common respiratory diseases, because children's bronchial mucosal barrier function has not been fully developed, and inhalation of external allergens is prone to allergic reactions and cough. Parents should pay attention to the frequent occurrence of children's allergic cough, find out allergens, such as pollen, animal dander, hair and food, and take their children to the hospital for face-to-face consultation with doctors. It is worth mentioning that allergic cough, a child, avoided abusing antibiotics during the treatment.

3. Allergic asthma

The premonitory symptoms of allergic asthma are sneezing, coughing and runny nose. Therefore, it is easy to be mistaken for a cold from the beginning, which leads to the aggravation of the disease. The mid-term symptoms are usually wheezing, dyspnea and sitting breathing. The common late symptoms are headache, dizziness and drowsiness. For infants with allergic asthma, prevention is the key to avoid contact with allergens in daily life.

Second, the digestive system

In the digestive system, constipation or diarrhea and bloody stool are the main manifestations. For children, the common allergens are milk protein, bean products, egg yolk, seafood, nuts and so on. Some children will have diarrhea and bloody stool after eating these foods, but some children will have persistent and repeated constipation. In these cases, parents are advised to look for allergens in their children's daily diet. After finding the allergen, it is suggested to stop using this kind of food and its products for about 6 months, and then try a small amount. Some children will gradually tolerate it as they get older.

Third, the skin.

1, allergic urticaria

Common allergens causing allergic urticaria are: drugs, vaccines, food, pollen, cold air and so on. Generally, there is a red lump on the skin locally or all over the body, with white in the middle, visible pores and skin protrusions. Can be fused into pieces for a long time, accompanied by obvious itching, and can quickly disappear. Generally, it can fade automatically in about 24 hours, and can be applied with calamine lotion to relieve itching. If necessary, you can take antihistamines under the guidance of a doctor to prevent allergic reactions.

2, allergic eczema

Children's allergic eczema is often easy to recur, and it does not heal for many years, which is more common in infants. It is easy to appear in eyebrows, cheeks, scalp, ears and other places, and gradually spread. And often because of the child's scratching, the condition is further aggravated, and it is easy to bleed, causing bacterial infection. There are many reasons for allergic eczema, such as milk, eggs, beans and seafood. It may induce allergic eczema, and milk protein allergy is a common cause. In case of allergic eczema, parents should avoid scratching their children, look for allergens and seek help from doctors in time. Avoidance+provocation test can be used to find allergens, and infants with milk protein allergy can choose deep hydrolyzed milk powder or amino acid milk powder. If there is breast-feeding, mothers should pay attention to avoid foods containing milk protein.

For allergies, parents are advised to patiently record their children's daily food, clothing, housing and transportation to find allergens. For baby allergies, the best way is to avoid allergens and wait patiently. As children grow older, many children will tolerate themselves.