ArticlePLoS neglected tropical diseases2020
A community-based validation of the International Alliance for the Control of Scabies Consensus Criteria by expert and non-expert examiners in Liberia.
Article in PLoS neglected tropical diseases, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed.
- Scabies outbreak management in a vulnerable elderly population: Evidence from northeastern Iran.Parasite epidemiology and control · 2026Article
- Assessment of scabies diagnosis and the impact of MDA for onchocerciasis on the burden of scabies in an endemic community in Ghana.BMC infectious diseases · 2026Article
- An assessment of interobserver agreement on lesion size, morphology and clinical phenotype in cutaneous leishmaniasis caused byNIHR open research · 2025Article
- Training of Field-Workers for Rapid Assessment of Scabies Prevalence: A Diagnostic Accuracy Study in Mozambique.The American journal of tropical medicine and hygiene · 2024Article
- Scabies.Nature reviews. Disease primers · 2024Review
- Clinical practice guidelines for the diagnosis and treatment of scabies in Korea: Part 1. Epidemiology, clinical manifestations, and diagnosis - a secondary publication.Ewha medical journal · 2024Article
- Prevalence and associated risk factors of scabies and impetigo: A cross-sectional study in Tutume district, Botswana.PLoS neglected tropical diseases · 2024Article
- Prevalence and determinants of impetigo in Ghana: a cross-sectional study.BMC infectious diseases · 2024Article
- Low prevalence of scabies and impetigo in Dakar/Senegal: A cluster-randomised, cross-sectional survey.PLOS global public health · 2024Article
- Beliefs, attitudes and practices towards scabies in central Ghana.PLoS neglected tropical diseases · 2023Article
- Investigating the Antibacterial Properties of Prospective Scabicides.Biomedicines · 2022Article
- Diagnostics to support the control of scabies-Development of two target product profiles.PLoS neglected tropical diseases · 2022Article
- Estimation of scabies prevalence using simplified criteria and mapping procedures in three Pacific and southeast Asian countries.BMC public health · 2021Article
- A framework for scabies control.PLoS neglected tropical diseases · 2021Article
- Prevalence of scabies and impetigo in school-age children in Timor-Leste.Parasites & vectors · 2021Article
- The prevalence of scabies in Monrovia, Liberia: A population-based survey.PLoS neglected tropical diseases · 2020Article
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11 authors.
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Abstract
backgroundThe International Alliance for the Control of Scabies (IACS) recently published expert consensus criteria for scabies diagnosis. Formal validation of these criteria is needed to guide implementation. We conducted a study to provide detailed description of the morphology and distribution of scabies lesions as assessed by dermatologists and validate the IACS criteria for diagnosis by both expert and non-expert examiners.
methodsParticipants from a community in Monrovia, Liberia, were independently assessed by two dermatologists and six non-expert examiners. Lesion morphology and distribution were documented based on the dermatologist examination. Diagnoses were classified by IACS criteria and the sensitivity and specificity of non-expert examiner assessments calculated.
resultsPapules were the most common lesions (97.8%). Burrows were found in just under half (46.7%) and dermatoscopy was positive in a minority (13.3%). Scabies lesions were found in all body regions but more than 90% of patients could have been diagnosed by an examination of only the limbs. Severity of itch was associated with lesion number (p = 0.003). The sensitivity of non-expert examiners to detect typical scabies ranged between 69-83% and specificity 70-96%. The sensitivity of non-expert examiners was higher in more extensive disease (78-94%).
conclusionsThe IACS criteria proved a valid tool for scabies diagnosis. For the purposes of implementation papules and burrows represent truly 'typical' scabies lesions. Non-expert examiners are able to diagnose scabies with a high degree of accuracy, demonstrating they could form a key component in population-level control strategies.
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