What causes lower respiratory tract infection in children?

Children have weaker immunity and are therefore more susceptible to respiratory infections. Respiratory tract infections can be specifically divided into upper respiratory tract infections and lower respiratory tract infections. Today, the editor will give you some basic knowledge about lower respiratory tract infections. The occurrence of respiratory tract infections is related to low immunity, and timely measures need to be taken for treatment, otherwise pneumonia and other conditions will occur.

Why do children have repeated respiratory tract infections? The reasons can be divided into two aspects: internal and external factors:

1. Internal causes: We have mentioned that viruses are common pathogens of respiratory tract infections. The nasty thing about viruses is that after they infect, they can cause exfoliation or necrosis of the respiratory epithelium, resulting in loss of complete mucosal coverage, exposing the underlying tissues and creating opportunities for a second, third... infection.

Secondly, after viral infection, it often affects the immune system, causing temporary (most cases) or permanent (very few) suppression of the immune system's function. Every time you are infected, your immunity is suppressed, the time it takes to return to normal is prolonged, and the chance of infection next time is greater.

2. There are many external factors. There is one point that parents and primary care physicians should pay special attention to. When children suffer from acute respiratory tract infections, do not use hormone drugs easily in a hurry to reduce the child's fever or relieve cough. Do not use drugs that suppress the immune system such as chlorpheniramine and diphenhydramine for a long time in order to reduce the child's runny nose.

Respiratory tract infection is a common disease in children. The onset is usually sudden and may include fever, runny nose, nasal congestion, sneezing and mild cough. Some may experience vomiting, diarrhea, etc.

Recurrent respiratory tract infections are closely related to children's body's defense capabilities, nutritional status, and environmental factors, and are related to the anatomical characteristics of children's respiratory tract.

In fact, doing a good job of prevention is also very important for improving recurrent respiratory tract infections in children. In daily life, we can focus on strengthening children's physical fitness, take children out to bask in the sun and do outdoor sports more often. At the same time, you also need to pay attention to maintaining air circulation, because stagnant air contains a high level of bacteria.