What infection is often associated with the presence of a non-productive cough in children?

The non-productive cough in children is often associated with asthma due to the underlying inflammation and airway hyperresponsiveness that characterizes this condition. In asthma, coughing can be a reflexive response to irritation in the airways without the presence of mucus production, which differentiates it from infections that typically prompt a productive cough.

Asthma can trigger a cough as one of the chief symptoms, particularly during episodes of wheezing or shortness of breath. This persistent, dry cough is particularly common at night or during physical exertion. Other associated symptoms may include chest tightness and difficulty breathing, but the hallmark of asthma-related coughing is that it tends to be non-productive, reflecting the nature of the airway constriction and inflammation rather than infection with mucus production.

In contrast, infections such as pneumonia or bronchitis usually lead to a productive cough, as these conditions involve the accumulation of mucus in the airways or lung tissues. Allergies may induce a cough as well, but it is often accompanied by other symptoms such as sneezing, nasal congestion, or itchy eyes, and can also be productive due to post-nasal drip. Thus, while allergies can cause coughing, they typically do not feature the same non-productive aspect associated with asthma.