Scabies of the nail unit

Oh, Susan; Vandergriff, Travis

doi:10.5070/d32010024265

Cited by 9 publications

(3 citation statements)

References 3 publications

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“…In contrast to previous reports, all of our patients sufficiently treated the subungual region (of the fingers), which has been repeatedly suggested to serve as a potential reservoir for scabies mites .…”

Section: Discussioncontrasting

confidence: 81%

Application errors associated with topical treatment of scabies: an observational study

Nemecek¹,

Stockbauer²,

Lexa³

et al. 2020

J Deutsche Derma Gesell

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Summary Background In recent years, there has been a significant increase in scabies infestations throughout German‐speaking countries. Given the high frequency of treatment failures, the question arises as to whether topical permethrin treatment is always performed correctly. Patients and methods Our department uses a fluorescent test cream to teach patients on how to correctly apply topical permethrin. In the context of a prospective observational study of 21 patients, we systematically assessed and analyzed potential application errors. Results None of the participants succeeded in adequately applying the cream to the entire skin as previously instructed. The median number of regions left untreated was six (minimum: 2; maximum: 18), which included a median body surface area of 6 % (minimum: 2 %; maximum: 30 %). With regard to predilection sites of scabies, the ankles were left untreated in 62 % of cases, followed by the interdigital spaces (toes) (33 %) and the sacral region (24 %). All patients considered the pretreatment training to be very useful. Conclusions The present findings clearly demonstrate potential shortcomings when it comes to the application of topical antiscabies treatment. This may provide a (potentially underestimated) explanation for the large number of reports on treatment failures in this regard, which falsely suggest potential treatment resistance.

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Section: Discussioncontrasting

confidence: 81%

Application errors associated with topical treatment of scabies: an observational study

Nemecek¹,

Stockbauer²,

Lexa³

et al. 2020

J Deutsche Derma Gesell

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“…On an extensive search of the literature for nail scabies/ungual scabies, we found a total of 26 reports with 27 patients (Table 1) [9‒29]. The age at presentation was reported for 26 of these, with an average of 43 years (range 4 months–90 years), suggesting that ungual scabies is not associated with any specific age group.…”

Section: Discussionmentioning

confidence: 99%

Ungual Scabies: A Case Report and Review of Literature

Gaurav,

Tyagi,

Grover

et al. 2023

Skin Appendage Disord

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Introduction: Nail unit infestation by scabies mites (ungual scabies) is uncommon. It usually presents with distal subungual lesions, leading to recurrent and persistent disease by acting as a reservoir of infection. Periungual involvement in scabies with nail loss is rare and may lead to severe nail damage. Case Presentation: We report a 14-year-old boy on chemotherapy for acute lymphocytic leukemia (ALL) who presented with extensive scaling and crusted plaques of scabies. Nail unit revealed periungual crusted plaques with paronychia and onychomadesis involving five digits. It was associated with partial to complete nail loss. Dermoscopy of periungual crusted plaques showed greyish-white scales with brown dots and globules. A sinuous burrow with a brown-triangular structure was visualized in the web space. KOH mount from skin scrapings showed the scabies mites. Treatment of scabies led to a marked improvement. Conclusion: Though ungual scabies is generally a benign disease, proximal periungual involvement with damage to nail matrix is possible, leading to nail loss. We review manifestations of nail unit scabies reported in literature. Treatment options used and outcomes are also analyzed. The importance of nail-directed therapy in preventing relapses of scabies cannot be undermined.

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“…Im Gegensatz dazu zeigte sich die in der Literatur immer wieder spekulativ als potenzielles Milbenreservoir beschriebene Subungualregion in der vorliegenden Studie bei allen Patienten als ausreichend behandelt [18][19][20].…”

Section: Diskussionunclassified