After a week or two, signs and symptoms worsen. Thick mucus accumulates inside your airways, causing uncontrollable coughing. Severe and prolonged coughing attacks may:
Result in a red or blue face
Cause extreme fatigue
End with a high-pitched "whoop" sound during the next breath of air
However, many people don't develop the characteristic whoop. Sometimes, a persistent hacking cough is the only sign that an adolescent or adult has whooping cough.
Infants may not cough at all. Instead, they may struggle to breathe, or they may even temporarily stop breathing.
When to see a health care provider
Call your doctor if prolonged coughing spells cause you or your child to: