While all children will experience coughing, the development of chronic cough—one that lasts more than 4 weeks—warrants a visit to the pediatrician.
In this video, Matthew T. Brigger, MD, MPH, a pediatric otolaryngologist at Rady Children's Hospital San Diego, explains the many different causes for a persistent or chronic cough in children.
Ultimately, your pediatrician is your best source for evaluation and can refer you to a pediatric specialist if needed.
Additional Information from HealthyChildren.org: