Catarrhal stage

Definition

The catarrhal stage is the initial phase of whooping cough (pertussis) characterized by symptoms similar to a common cold, such as runny nose, sneezing, mild cough, and low-grade fever. This stage typically lasts for one to two weeks before progressing to more severe stages.

5 Must Know Facts For Your Next Test

1. The catarrhal stage is highly contagious and represents the most infectious period of whooping cough.
2. Symptoms during the catarrhal stage can often be mistaken for those of a common cold or other upper respiratory infections.
3. Antibiotic treatment is most effective if administered during the catarrhal stage to prevent progression and transmission.
4. During this stage, Bordetella pertussis bacteria colonize the respiratory tract without causing severe tissue damage yet.
5. Early diagnosis in the catarrhal stage can significantly reduce morbidity and prevent outbreaks.

Review Questions

• What are common symptoms observed during the catarrhal stage of whooping cough?
• Why is early antibiotic treatment crucial during the catarrhal stage?
• How long does the catarrhal stage typically last before progressing to more severe stages?

Related terms

Paroxysmal Stage: The second phase of whooping cough marked by intense coughing fits followed by a 'whooping' sound.

Convalescent Stage: The final recovery phase of whooping cough where symptoms gradually decrease.

Bordetella Pertussis: The bacterial pathogen responsible for causing whooping cough (pertussis).