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Related Experiment Videos

Persistent nocturnal cough in childhood: a population based study

T K Ninan1, L Macdonald, G Russell

  • 1University of Aberdeen, Department of Child Health.

Archives of Disease in Childhood
|November 1, 1995
PubMed
Summary

Persistent nocturnal cough (PNC) in children, without other asthma symptoms, is rarely a sign of hidden asthma. Clinical features of children with PNC align more with asymptomatic children than those with polysymptomatic asthma.

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Area of Science:

  • Pediatric Pulmonology
  • Epidemiology
  • Allergy

Background:

  • Persistent nocturnal cough (PNC) is a common respiratory symptom in children.
  • Its role as an independent marker for childhood asthma requires further investigation.

Purpose of the Study:

  • To determine if persistent nocturnal cough (PNC) is a valid independent marker for childhood asthma.
  • To compare the clinical features of children with isolated PNC to those with polysymptomatic asthma and asymptomatic children.

Main Methods:

  • A cross-sectional epidemiological study involving 4003 primary school children.
  • Screening questionnaires identified symptomatic and asymptomatic children for diagnostic interviews.
  • Stepwise discriminant analysis was used to categorize children based on symptoms.

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Main Results:

  • Children with isolated PNC showed clinical features more similar to asymptomatic children than to those with polysymptomatic asthma.
  • Prevalence of prematurity was highest in the PNC group (19%).
  • While eczema and parental asthma history were more common in PNC and polysymptomatic asthma groups compared to asymptomatic, PNC alone was not a strong indicator of asthma.

Conclusions:

  • Persistent nocturnal cough (PNC) in children, when isolated and without other typical asthma symptoms like wheezing or chest tightness, is unlikely to be a manifestation of atypical or hidden asthma in most cases.
  • PNC's clinical presentation more closely resembles that of the asymptomatic population.