Which of the following is a common symptom of asthma?

Shortness of breath is a hallmark symptom of asthma, which is a chronic inflammatory disease of the airways characterized by episodes of airflow obstruction. This occurs due to bronchoconstriction, airway inflammation, and increased mucus production. Individuals with asthma often experience difficulty breathing, especially during physical exertion, at night, or in response to triggers like allergens or exercise. In asthma, this symptom can be accompanied by wheezing, chest tightness, and coughing. Recognizing shortness of breath as a key indicator is crucial for diagnosis and management, as it directly impacts the patient's ability to engage in daily activities and overall quality of life.

In contrast, high fever, rash, and diarrhea are not typical symptoms associated with asthma. These symptoms are more likely to be indicative of different medical conditions or infections, which do not involve the airway obstruction or inflammation characteristic of asthma.