Anti-histamines for prolonged non-specific cough in children

Chang, A. B., Peake, J. and McElrea, M. S. (2006) Anti-histamines for prolonged non-specific cough in children. Cochrane Database of Systematic Reviews, 3: . doi:10.1002/14651858.CD005604.pub2

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Author Chang, A. B.
Peake, J.
McElrea, M. S.
Title Anti-histamines for prolonged non-specific cough in children
Journal name Cochrane Database of Systematic Reviews   Check publisher's open access policy
ISSN 1469-493X
Publication date 2006-07-19
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1002/14651858.CD005604.pub2
Open Access Status File (Publisher version)
Issue 3
Total pages 16
Place of publication Chichester, West Sussex, United Kingdom
Publisher John Wiley & Sons
Language eng
Formatted abstract
Background: Non-specific cough is defined as non-productive cough in the absence of identifiable respiratory disease or known aetiology. It is commonly seen in paediatric practice. These children are treated with a variety of therapies including anti-histamines. Also, anti-histamines are advocated as an empirical treatment in adults with chronic cough.

Objectives: To evaluate the effectiveness of anti-histamines in treating children with prolonged non-specific cough.

Search strategy: The Cochrane Register of Controlled Trials (CENTRAL), MEDLINE, OLDMEDLINE and EMBASE databases were searched by the Cochrane Airways Group. The latest searches were performed in November 2006.

Selection criteria: All randomised controlled trials comparing anti-histamines with a placebo or placebo-like medication with cough as an outcome, where cough is not primarily related to an underlying respiratory disorder such as cystic fibrosis, asthma, or suppurative lung disease.

Data collection and analysis: Results of searches were reviewed against pre-determined criteria for inclusion. Two independent reviewers selected, extracted and assessed data for inclusion. Three eligible trials were identified.

Main results: The three included studies varied in age of subjects, sample size, inclusion criteria, type of anti-histamine and length of intervention. These 3 studies included 182 randomised subjects with 162 completing the trials although in one study, children with recurrent wheeze were also included. Clinical heterogeneity was evident and limited data prevented combining data for meta-analysis. The two larger studies described significant improvement in both the intervention and the placebo/placebo-like arms with no significant difference between the two groups. In the study with the smallest sample size, cetirizine (a second generation anti-histamine) was significantly more efficacious than placebo in reducing chronic cough in children associated with seasonal allergic rhinitis, and the effect was seen within 2 weeks of therapy.

Authors' conclusions: This review has significant limitations. However, our finding of uncertain efficacy of anti-histamines for chronic cough are similar to that for acute cough in children. In contrast to recommendations in adults with chronic cough, anti-histamines cannot be recommended as empirical therapy for children with chronic cough. If anti-histamines were to be trialled in these children, current data suggest a clinical response (time to response) occurs within 2 weeks of therapy. However the use of anti-histamines in children with non-specific cough has to be balanced against the well known risk of adverse events especially in very young children.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collection: School of Medicine Publications
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