When my daughter was 3.5 years old, she had a cough that took more than a month to clear up, and she had to take anti-inflammatory and cough medicine every day. She was worried every time she took the medicine, and her little face often frowned in the face of the unpleasant tasting drops and the soft and tough dad. Six months after she started kindergarten, her cough was frequent, intermittent, and light at times, and even though I am a pediatrician, I was not seldom disturbed by this situation. I am ashamed to say that the cough lasted for almost a month, and after using many kinds of antibiotics, my daughter’s cough did not abate, and she often slept with a violent cough at night, with a small amount of white mucousy sputum, and vomited all over the bed when she coughed. My mother and my daughter’s mother were upset with me because the child’s cough was not cured for a long time. I was also troubled. My child had a lung CT, no obvious inflammation, no bronchial foreign bodies, no developmental abnormalities of the lungs and bronchi; no chronic toxicity symptoms, normal BCG vaccination, negative PPD test, tuberculosis may not be significant; Mycoplasma pneumoniae was checked, negative, mycoplasma infection is not like; no wheezing, Pulmicort nebulization was inhaled, cough was not relieved, and it was not cough allergic asthma. Antibiotics penicillin used, erythromycin used, Neurontin used, all to no avail. What exactly is the cause? There is no fever and other symptoms of infection and poisoning, lung and airway infection factors are unlikely, and asthma is not. I was concerned about extra-pulmonary factors: rhinitis, sinusitis, but none of them. Compression of the lungs and trachea by the thoracic structures, also not. The heart was also not a problem. Gastritis, gastroesophageal reflux, yes, my daughter was prone to milk spillage when she was young, and sometimes she said she had abdominal pain after she started kindergarten, so she took some morpholine first to see what happened. After two days of morpholine, her cough was much reduced and she did not cough at night. I gave my child medicine for gastritis and esophageal reflux: cimetidine, amoxicillin, morpholine, etc. After a week, the coughing symptoms basically disappeared and my child was as lively and cute as before. It turned out that the cough was really caused by GERD, so she continued to consolidate her treatment for 2 weeks and her coughing troubles were gone. In fact, there are many causes of coughing in children, and inflammation of the trachea and lungs is the most common. Therefore, most doctors and parents choose to treat coughs with anti-infective and phlegm-suppressing treatments, and most children definitely have no problems with these treatments, but sometimes some children have coughs that are not due to the above reasons. The common causes for children who still cough after regular anti-infection and have no obvious abnormalities on lung x-ray are upper airway cough syndrome, cough variant asthma and gastritis and gastroesophageal reflux. Upper airway cough syndrome is a cough caused by secretions from the upper airway and paranasal sinuses dripping backward into the pharynx, and gastritis and gastroesophageal reflux cause reflex cough and choking from the refluxed material. There are other rare causes of cardiovascular malformations, abdominal diseases affecting the diaphragm, etc. These abnormalities can also cause frequent coughing. So when your child has a cough that does not stop and is not cured for a long time be sure to think if there are other causes and do not run into the black on the lung and tracheal inflammation treatment which can delay your child and cause unnecessary troubles.