There is no such thing as a child’s cough going from no sputum to sputum. A child’s cough going from no sputum to sputum may be a sign of improvement or aggravation, or it may be in a period of recovery from the disease.
Children’s cough caused by whooping cough and other diseases may start with a dry cough, when there is no phlegm in the throat, and then enter the phlegm phase after treatment, the symptoms of phlegm, can be the inflammatory secretions in the throat, coughing up phlegm after the throat is more comfortable, from the absence of phlegm to phlegm represents a sign of improvement of the symptom.
When a child’s cough is caused by acute bronchitis, he or she may have a dry cough at first, but as the disease progresses, he or she will cough up phlegm, which is a sign of disease progression.
Parents are advised to take their children to a regular hospital if they have a cough, and to follow the doctor’s instructions for targeted treatment after a clear diagnosis is made.