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. 2005 Aug 30;90(11):1162–1165. doi: 10.1136/adc.2004.070797

Well defined symptoms are of value in the diagnosis of childhood pulmonary tuberculosis

B Marais 1, R Gie 1, C Obihara 1, A Hesseling 1, H Schaaf 1, N Beyers 1
PMCID: PMC1720155  PMID: 16131501

Abstract

Background: The diagnosis of childhood pulmonary tuberculosis presents a major challenge as symptoms traditionally associated with tuberculosis are extremely common in children from endemic areas. The natural history of tuberculosis in children shows that progressive disease is associated with symptoms which have a persistent, non-remitting character. The aims of this study were to investigate whether improved symptom definition is possible in a clinical setting, and whether use of these well defined symptoms has improved value in the diagnosis of childhood pulmonary tuberculosis.

Methods: A prospective, community based study was conducted in two suburbs of Cape Town, South Africa. All children (<13 years) presenting to the local community clinic with a cough of >2 weeks duration, were referred to the investigator. Parents completed a symptom based questionnaire, whereafter reported symptoms were characterised in a standard fashion.

Results: Of the 151 children enrolled, 21 (15.6%) reported symptoms with a persistent, non-remitting character. Tuberculosis was diagnosed in 16 (10.5%) children, all of whom reported these symptom characteristics. A persistent, non-remitting cough was reported in 15/16 (93.8%) children with tuberculosis and in 2/135 (1.5%) children without tuberculosis, indicating a specificity of 98.5% (135/137). Persistent fatigue of recent onset was also sensitive (13/16, 81.3%) and specific (134/135, 99.3%). Persistent fever and/or chest pain were exclusively reported in children with tuberculosis, but were present in only 4/16 (25.0%) children with tuberculosis.

Conclusion: The use of well defined symptoms is feasible, even in resource limited settings, and may offer significantly improved value in the diagnosis of childhood pulmonary tuberculosis.

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Figure 1.

Figure 1

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 Differentiated cough patterns.

Figure 2.

Figure 2

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 The frequency of specific cough patterns associated with different clinical diagnoses (n = 151).

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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