What is a primary symptom of pertussis (whooping cough)?

A primary symptom of pertussis, commonly known as whooping cough, is characterized by a tight, dry cough that can be severe and may lead to vomiting. This distinctive cough is often followed by a "whooping" sound when the person inhales. It typically develops in stages, starting with mild cold-like symptoms, but can escalate to intense coughing fits.

The coughing fits are not only uncomfortable but can also lead to complications such as vomiting, which is why recognizing this symptom is crucial for timely intervention and treatment. Pertussis is highly contagious and recognizing the symptom early can prevent further spread and allow for appropriate medical care.

Other options, while they may be associated with different conditions or illnesses, do not typically manifest as primary symptoms of whooping cough: severe headaches and joint pain relate more to other health issues, and a high fever accompanied by a rash could indicate infections such as measles or rubella rather than pertussis.