What reason is dot cough a week

Children cough for a week, it is likely to be caused by a cold, if it has been more than a week, or accompanied by shortness of breath, chest distress and other symptoms, there may be related to childhood bronchitis, childhood pneumonia and other diseases, if it is a long-term dry cough, also do not rule out the possibility of allergic cough, it is recommended to remove the cause in time.