🦠microbiology review

Paroxysmal stage

Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025

Definition

The paroxysmal stage is a phase of pertussis (whooping cough) characterized by severe coughing fits. These episodes can cause difficulty breathing and often end with a high-pitched 'whoop' sound.

5 Must Know Facts For Your Next Test

  1. The paroxysmal stage typically lasts 1-6 weeks but can extend up to 10 weeks.
  2. During this stage, individuals may experience repeated violent coughing spells that can lead to vomiting and exhaustion.
  3. Antibiotics are less effective in alleviating symptoms during the paroxysmal stage, though they are still important for reducing transmission.
  4. Complications such as pneumonia, rib fractures, and brain damage can arise from the intense coughing fits in this stage.
  5. The characteristic 'whoop' sound is due to the rapid inhalation of air after a coughing fit.
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