My child has a chronic cough with no other symptoms, what could this be?

Asthma: Children with a chronic cough should be evaluated for asthma, which is the most common cause. However, often other etiologies need to be ruled out, such as allergies, pneumonia, aspiration events.

Depends ...: For children who cough mostly at night, especially if they cough hard enough that they occasionally vomit, and children who cough at night and spend the first hour in the morning after waking up doing "throat clearing" and coughing to clear: I am very suspicious of ger as a factor. Gastro-esophageal reflux. In my practice, i often don't test, but treat them. If they improve, i confirm my diagnosis.