Scabies

From dermoscopedia

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 Editor: Aimilios Lallas

 Author(s): Aimilios Lallas
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Author(s) Aimilios Lallas
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The typical dermoscopic pattern of scabiesThis glossary term has not yet been described. consists of small dark brown triangular structuresThis glossary term has not yet been described. located at the end of whitish structureless lines (curved or wavy), giving an appearance reminiscent of a delta-wing jet with contrail (Fig 9a).[1] Microscopically, the brown triangle corresponds to the pigmented anterior part of the mite, while the burrow of the mite correlates dermoscopically to the contrail feature. Since then, the value of dermoscopyThe examination of [skin lesions] with a 'dermatoscope'. This traditionally consists of a magnifier (typically x10), a non-polarised light source, a transparent plate and a liquid medium between the instrument and the skin, and allows inspection of skin lesions unobstructed by skin surface reflections. Modern dermatoscopes dispense with the use of liquid medium and instead use polarised light to cancel out skin surface reflections. in diagnosisis the identification of the nature and cause of a certain phenomenon. Diagnosis is used in many different disciplines with variations in the use of logic, analytics, and experience to determine "cause and effect". In systems engineering and computer science, it is typically used to determine the causes of symptoms, mitigations, and solutions of scabies has been extensively investigated in several studies.[2][3][4][5] The diagnostic accuracyThis glossary term has not yet been described. of the technique was reported to be at least equal to traditional ex-vivo microscopic examination (i.e. skin scraping), while additional comparative advantages of dermoscopy include its non-invasiveness and lower requirements in terms of time, costs and experience.[4][5] Nowadays, dermoscopy has replaced ex-vivo microscopy as the routine method for diagnosis of scabies in several dermatology centers. Additional to its value for diagnosis, dermoscopy may also be useful in treatment monitoring, heralding treatment success when dermoscopic ‘jet with contrail’ features can no longer been detected.[6]
  1. Argenziano et al.: Epiluminescence microscopy. A new approach to in vivo detection of Sarcoptes scabiei. Arch Dermatol 1997;133:751-3. PMID: 9197830.
  2. Bauer et al.: Nodular scabies detected by computed dermatoscopy. Dermatology (Basel) 2001;203:190-1. PMID: 11586026.
  3. Prins et al.: Dermoscopy for the in vivo detection of sarcoptes scabiei. Dermatology (Basel) 2004;208:241-3. PMID: 15118379. DOI.
  4. 4.0 4.1 Walter et al.: Comparison of dermoscopy, skin scraping, and the adhesive tape test for the diagnosis of scabies in a resource-poor setting. Arch Dermatol 2011;147:468-73. PMID: 21482897. DOI.
  5. 5.0 5.1 Park et al.: The diagnostic accuracy of dermoscopy for scabies. Ann Dermatol 2012;24:194-9. PMID: 22577271. DOI.
  6. Hamm et al.: Treatment of scabies with 5% permethrin cream: results of a German multicenter study. J Dtsch Dermatol Ges 2006;4:407-13. PMID: 16686608. DOI.