What causes coughing in newborn babies?

Newborn coughing may be caused by physiological factors, upper respiratory tract infections, allergies, or other reasons. The specific details are as follows:

1. Physiological factors

If newborns are exposed to cold or hot air, or to harmful gases from family members smoking, they may develop a reactive cough. In addition, if a newborn chokes on saliva or milk—especially when feeding too quickly—coughing commonly occurs. These situations are generally due to physiological causes and do not require special treatment.

2. Upper respiratory tract infection

Newborns have immature physical development and relatively weak immune systems, making them susceptible to bacterial or viral infections. An upper respiratory tract infection may lead to illnesses such as the common cold, bronchitis, or pneumonia. Increased nasal or airway secretions associated with these conditions often result in coughing.

3. Allergies

Newborns with an allergic constitution or weaker immunity may experience allergic reactions after inhaling airborne allergens such as dust mites, pollen, or animal dander, leading to allergic coughing.