Abstract
BackgroundThe most important symptom as well as one of the major diagnostic criteria for eczema is itch. Although oral antihistamines continue to be prescribed for people with eczema, it is unclear if they are effective and safe in relieving itch and skin lesions. We sought to evaluate the available evidence on effectiveness of oral antihistamines (H1 antagonists) as monotherapy in children and adults with eczema.MethodsSearches included 10 databases and trial registers as well as conference proceedings (January 2014). Randomised controlled trials that assessed the effects of oral H1 antihistamines as monotherapy in children and adults with eczema were included.ResultsOur searches retrieved 757 references, but no randomised controlled trial met our inclusion criteria. Most studies allowed concomitant treatments, making the assessment of the individual effects of oral H1 antihistamines impossible.ConclusionsThere is currently no high-level evidence to support or refute the efficacy or safety of oral H1 antihistamines used as monotherapy for eczema. A further review of studies that assesses the effects of oral H1 antihistamines as ‘add-on’ therapy together with concomitant treatments is warranted to determine the beneficial effects of this group of medications in the treatment of eczema.
Highlights
The most important symptom as well as one of the major diagnostic criteria for eczema is itch
Eczema is a common chronic inflammatory skin disease with an estimated prevalence ranging from 2% to approximately 20% worldwide [1,2]
The majority of cases occur before the age of 5 years and, eczema often resolves during childhood or
Summary
There is currently no high-level evidence to support or refute the efficacy or safety of oral H1 antihistamines used as monotherapy for eczema. A further review of studies that assesses the effects of oral H1 antihistamines as ‘add-on’ therapy together with concomitant treatments is warranted to determine the beneficial effects of this group of medications in the treatment of eczema
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