Mayo Clinic Health Manager
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By Mayo Clinic staffOnce you become infected with whooping cough, it takes three to 12 days for signs and symptoms to appear. They're usually mild at first and resemble those of a common cold:
- Runny nose
- Nasal congestion
- Sneezing
- Red, watery eyes
- A mild fever
- Dry cough
After a week or two, signs and symptoms worsen. Severe and prolonged coughing attacks may:
- Bring up thick phlegm
- Provoke vomiting
- 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 — particularly infants, adolescents and adults — don't develop the characteristic whoop. Sometimes, a persistent hacking cough is the only sign that an adolescent or adult has whooping cough.
When to see a doctor
Call your doctor if prolonged coughing spells cause you or your child to:
- Vomit
- Turn red or blue
- Inhale with a whooping sound
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