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Diagnostic Accuracy of Dermoscopy for Scabies

The diagnostic accuracy of dermoscopy (DS) for scabies, a highly contagious parasitic disease, remains disputed. This study aimed to assess the diagnostic accuracy of DS in scabies, analyze the factors influencing DS, and explore its role in post-treatment evaluation. Patients with suspected scabies...

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Autores principales: Li, Feng-Zeng, Chen, Shuang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Society for Parasitology and Tropical Medicine 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7806431/
https://www.ncbi.nlm.nih.gov/pubmed/33412771
http://dx.doi.org/10.3347/kjp.2020.58.6.669
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author Li, Feng-Zeng
Chen, Shuang
author_facet Li, Feng-Zeng
Chen, Shuang
author_sort Li, Feng-Zeng
collection PubMed
description The diagnostic accuracy of dermoscopy (DS) for scabies, a highly contagious parasitic disease, remains disputed. This study aimed to assess the diagnostic accuracy of DS in scabies, analyze the factors influencing DS, and explore its role in post-treatment evaluation. Patients with suspected scabies were randomly divided into 2 groups: 71 patients in the skin scraping (SS) group and 73 patients in the DS group. The diagnostic efficiencies of SS and DS in these groups were calculated. We also analyzed the influence of body part and investigator competence on the accuracy of DS. Then 16 body parts with typical signs of scabies were monitored by DS 2 and 4 day after sulfur ointment treatment. The sensitivity and specificity of DS were 98.3% and 88.5%, respectively. Hands, arms, and the abdomen had higher positivity rates than other body parts (P<0.001). The accuracy of dermatologists’ interpretations of images negative for scabies in the intermediate- and high-level groups was higher than that in the low-level group (P<0.001). At follow-up, the mites were still visible on 43.8% to 62.5% of the skin lesions 2 and 4 day after sulfur ointment treatment. These results showed that DS could significantly increase the accuracy of diagnosing scabies owing to its high sensitivity and specificity. Therefore, it may be useful for monitoring clinical responses to anti-parasitic treatment.
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spelling pubmed-78064312021-01-25 Diagnostic Accuracy of Dermoscopy for Scabies Li, Feng-Zeng Chen, Shuang Korean J Parasitol Original Article The diagnostic accuracy of dermoscopy (DS) for scabies, a highly contagious parasitic disease, remains disputed. This study aimed to assess the diagnostic accuracy of DS in scabies, analyze the factors influencing DS, and explore its role in post-treatment evaluation. Patients with suspected scabies were randomly divided into 2 groups: 71 patients in the skin scraping (SS) group and 73 patients in the DS group. The diagnostic efficiencies of SS and DS in these groups were calculated. We also analyzed the influence of body part and investigator competence on the accuracy of DS. Then 16 body parts with typical signs of scabies were monitored by DS 2 and 4 day after sulfur ointment treatment. The sensitivity and specificity of DS were 98.3% and 88.5%, respectively. Hands, arms, and the abdomen had higher positivity rates than other body parts (P<0.001). The accuracy of dermatologists’ interpretations of images negative for scabies in the intermediate- and high-level groups was higher than that in the low-level group (P<0.001). At follow-up, the mites were still visible on 43.8% to 62.5% of the skin lesions 2 and 4 day after sulfur ointment treatment. These results showed that DS could significantly increase the accuracy of diagnosing scabies owing to its high sensitivity and specificity. Therefore, it may be useful for monitoring clinical responses to anti-parasitic treatment. The Korean Society for Parasitology and Tropical Medicine 2020-12 2020-12-31 /pmc/articles/PMC7806431/ /pubmed/33412771 http://dx.doi.org/10.3347/kjp.2020.58.6.669 Text en Copyright © 2020 by The Korean Society for Parasitology and Tropical Medicine This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Li, Feng-Zeng
Chen, Shuang
Diagnostic Accuracy of Dermoscopy for Scabies
title Diagnostic Accuracy of Dermoscopy for Scabies
title_full Diagnostic Accuracy of Dermoscopy for Scabies
title_fullStr Diagnostic Accuracy of Dermoscopy for Scabies
title_full_unstemmed Diagnostic Accuracy of Dermoscopy for Scabies
title_short Diagnostic Accuracy of Dermoscopy for Scabies
title_sort diagnostic accuracy of dermoscopy for scabies
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7806431/
https://www.ncbi.nlm.nih.gov/pubmed/33412771
http://dx.doi.org/10.3347/kjp.2020.58.6.669
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