Which respiratory disease is known for causing a high-pitched "whoop" sound during coughs?

• A. Pertussis
• B. Influenza
• C. Asthma
• D. Bronchitis

Answer: (A)

Pertussis, commonly known as whooping cough, is characterized by severe coughing fits that often lead to a distinctive high-pitched "whoop" sound during the inhalation that follows a coughing episode. This sound is produced when air is rapidly drawn into the lungs after a series of forceful coughs. The disease is caused by the bacterium Bordetella pertussis and is particularly notable for this characteristic cough, which can be quite debilitating and is one of the hallmark symptoms of the illness.

The other conditions listed have different primary characteristics and symptoms. Influenza typically causes symptoms like fever, body aches, and a non-specific cough but lacks the whooping sound associated with pertussis. Asthma may produce wheezing sounds during breathing, especially upon expiration, but not necessarily during coughing in the same manner. Bronchitis can lead to a productive cough and sometimes wheezing, but it does not typically present with the distinctive whooping sound indicative of pertussis. Understanding these distinctions is crucial for accurate diagnosis and treatment.