Coughing is a protective reaction, and you may also have this experience, choking accidentally when drinking water, and then you can’t help coughing, this is because the water enters the airway, the respiratory tract is stimulated, and the signal is transmitted to the brain through the nerves, the brain analyzes and makes feedback, and instructs the body to make a coughing action, under the coughing action, a strong airflow is generated in the respiratory tract, and the water that choked in is washed out. Without coughing, the water may stay in the trachea and not come out, or even flow into the lungs with the inhalation action. By coughing, the water that should not enter the airway is expelled, ensuring the smooth flow of the airway and avoiding the risk of airway blockage and secondary infection. In addition to mechanical stimuli such as choking and foreign bodies in the airways, coughs are also caused by chemical and inflammatory stimuli. Chemical stimuli such as inhalation of irritating gases like smoke, inflammatory stimuli including inflammatory reactions caused by infections with microorganisms such as viruses, bacteria and mycoplasma, and chronic inflammation such as asthma caused by a combination of allergies and infections, inflammatory stimuli are also the most common causes of coughs. A child’s occasional cough may be a little reaction of the respiratory tract to changes in the air, not necessarily a problem, plus viral infections of the respiratory tract like colds are common in childhood, and the cough slowly gets better on its own when the cold gets better. Viral infections are also the main cause of children’s coughs, and most of them do not need to be nervous. When the respiratory tract is infected, the secretions and necrotic tissues of the respiratory tract increase, forming phlegm, which can be expelled through coughing, facilitating the recovery of the infection, so coughing has a protective effect on the respiratory tract. In addition, coughing is also a signal of the condition of the respiratory system. When a child coughs incessantly, it means that the child’s respiratory system may have a condition, so coughing may be a sign of illness, but coughing itself is not necessarily a bad thing. Different coughs are treated differently. If the cough is caused by a bacterial infection, the cough may slowly get better after the pneumonia is reduced through antibiotic treatment. If asthma is caused by allergies, then hormones may be needed to suppress the allergic reaction in order to relieve the cough. If the cause of the cough is found and removed, the cough will naturally clear up. However, medicine is not yet advanced enough to solve all diseases. Some coughs are still difficult to determine the cause, and some have the cause but no good targeted treatment, such as a viral infection, so we have to treat the symptoms. Cough has a protective effect on the body, and stopping it may deprive the child of this mechanism. So, if your child can cough up phlegm, encourage him or her to do so so so that the phlegm does not get stuck in the airways. However, coughing too often does cause a lot of trouble for your child, especially at night when it interferes with sleep, and for dry coughs induced by an itchy throat, coughing up nothing only makes your child uncomfortable. Removing the cause of the cough, reducing this frequent dry cough and making the child more comfortable is the main goal of cough treatment.