What is a common sign of both asthma and upper respiratory infections in children?

Shortness of breath is a common sign associated with both asthma and upper respiratory infections in children due to the underlying mechanisms of these conditions. In asthma, the airways become inflamed and constricted, making it difficult for air to flow freely, which leads to feelings of breathlessness. In upper respiratory infections, such as colds or bronchitis, inflammation and mucus production can also obstruct the airways, resulting in similar symptoms.

This overlap in respiratory distress occurs because, in both scenarios, the air passages are affected, causing reduced airflow, which can be particularly noticeable during physical activity or exertion. Recognizing shortness of breath as a shared symptom helps in differentiating respiratory issues while keeping in mind that other signs may be more specific to either condition. For instance, loss of appetite, high fever, and night sweats are more indicative of infectious processes or other illnesses rather than directly tying to the airway obstruction inherent in asthma and upper respiratory infections.