Which illness is commonly known as whooping cough?

• A. asthma
• B. strep
• C. pertussis
• D. flu

Answer: (C)

Recognizing a disease by its common nickname helps you connect what you see in patients to the actual illness. Whooping cough is the common name for pertussis, a highly contagious respiratory infection caused by Bordetella pertussis. It earns its nickname from the distinctive, intense coughing fits that can end with a sharp inhalation that sounds like a “whoop,” especially in children. The illness typically progresses through stages: an initial catarrhal stage with mild cold-like symptoms, followed by a paroxysmal stage of frequent coughing spells, and finally a convalescent stage as recovery begins.

In practice, pertussis is notable because it spreads easily through respiratory droplets and can cause severe complications in young infants, though vaccination with DTaP in children and Tdap later in life helps prevent it. If treated early with a macrolide antibiotic, it can reduce transmission and shorten the duration of symptoms.

Other conditions listed don’t produce that characteristic whooping cough pattern. Asthma is a chronic airway condition with wheezing and breathlessness rather than an infectious cough pattern; strep throat is a bacterial throat infection with sore throat and fever but not the recurring paroxysmal coughing; the flu presents with abrupt fever, body aches, and fatigue rather than the distinctive fits followed by a whoop.