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Vol. 23 - Num. 89

Clinical Reviews

Infant scabies: dermoscopic diagnosis and Müller test

Javier Sánchez Bernala, Juan Monte Serranoa, Beatriz Aldea Manriqueb, Isabel Zárate Tejeroc

aServicio de Dermatología. Hospital General San Jorge. Huesca. España.
bServicio de Dermatología. Hospital Clínico Universitario Lozano Blesa. Zaragoza. España.
cPediatra. CS. Fuentes de Ebro. Zaragoza. España.

Reference of this article: Sánchez Bernal J, Monte Serrano J, Aldea Manrique B, Zárate Tejero I. Infant scabies: dermoscopic diagnosis and Müller test. Rev Pediatr Aten Primaria. 2021;23:83-6.

Published in Internet: 30-03-2021 - Visits: 1240

Abstract

Scabies, a skin infestation caused by Sarcoptes scabiei var. hominis, is generally easy to diagnose because of its characteristic clinical features. The diagnosis can be confirmed by the Müller test or by dermoscopy, a non-invasive, painless, and highly accurate technique. We present a representative case of infantile scabies with pathognomonic dermoscopic findings, in a 6-month-old girl referred for evaluation of a 2-week dermatitis. Under suspicion of scabies, a dermoscopy examination was performed, confirming the diagnosis by showing a distinctive dermoscopic feature composed of a S-shaped furrow with a triangle on one of its endings, known as delta wing jet sign. In addition, Müller test was performed, observing the mite on direct microscope examination after scraping one of the skin injuries. This case is a reminder of the typical clinical presentation of scabies in infants and the main methods that allow us to confirm the diagnosis. We want to highlight the usefulness of dermoscopy, as it is a simple and innocuous technique.

Keywords

Dermoscopy Scabies

 

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