Cutaneous dermatophytosis mimicking bullous pemphigoid or typical bullous pemphigoid and tinea incognito?

Tirado‐Sánchez, Andrés; Bonifáz, Alexandro

doi:10.4103/ijd.ijd_441_18

Cited by 1 publication

(2 citation statements)

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“…Firstly, the patients could have a short disease duration, pathogenic fungi were only in the cutaneous stratum corneum, and their blisters or pustules were aseptic inflammatory manifestations. Secondly, the blisters or pustules were not due to the pathogenic fungus, but the formation of blisters or pustules caused by other dermatological diseases is similar to pathogenic fungal infection or co‐infection with fungus 39 . Thirdly, it may be a false‐positive result caused by contamination on the scales.…”

Section: Discussionmentioning

confidence: 98%

“…Secondly, the blisters or pustules were not due to the pathogenic fungus, but the formation of blisters or pustules caused by other dermatological diseases is similar to pathogenic fungal infection or co-infection with fungus. 39 Thirdly, it may be a false-positive result caused by contamination on the scales. In contrast, eight patients were diagnosed with dermatomycosis in blister fluid but not scales.…”

Section: Ta B L E 1 Study On the Diagnosis Of Blister Fluid And Scalesmentioning

confidence: 99%

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Comparison of samples of blister fluid and scales in the diagnosis of dermatomycosis

Xia

Yang

et al. 2022

Mycoses

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Background The successful diagnosis of dermatomycosis depends on specimen collection. Dermatomycosis is sampled mainly for scales, but there is a lack of research on specimens of blister fluid. Objectives To explore whether blister fluid can diagnose dermatomycosis and compare blister fluid and scale specimens for dermatomycosis diagnosis. Methods From April to July 2021, we prospectively gathered 34 patients who needed to meet all inclusion criteria simultaneously and collected their blister fluid and scales as specimens. The two samples were tested by fluorescent stain microscopy, fungal culture and PCR, and the diagnosis results were compared. Results The blister fluid sample's sensitivity, specificity and accuracy were 90%, 100% and 94.1%, respectively, whereas the scales sample were 60%, 100% and 76.5%, respectively. The positive likelihood ratios were >10 for both blister fluid and scales specimen, and the negative likelihood ratios were not <0.1. On the Youden's index, the blister fluid specimen was 90%, and the scales specimen was 60%. As for the diagnostic odds ratio, both of them were >1. By fungal culture, we detected 14 cases of fungi in blister fluid and eight in scales. On PCR, 22 cases of fungi in blister fluid and ten in scales were identified. Conclusions This study demonstrated that a sample of blister fluid had better sensitivity, accuracy and Youden's index in diagnosing dermatomycosis with blister fluid. Collection of blister fluid might compensate for the inadequacy of collecting only scales specimens for mycological testing.

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Section: Discussionmentioning

confidence: 98%

Section: Ta B L E 1 Study On the Diagnosis Of Blister Fluid And Scalesmentioning

confidence: 99%

Comparison of samples of blister fluid and scales in the diagnosis of dermatomycosis

Xia

Yang

et al. 2022

Mycoses

View full text Add to dashboard Cite

show abstract

Cutaneous dermatophytosis mimicking bullous pemphigoid or typical bullous pemphigoid and tinea incognito?

Cited by 1 publication

References 2 publications

Comparison of samples of blister fluid and scales in the diagnosis of dermatomycosis

Comparison of samples of blister fluid and scales in the diagnosis of dermatomycosis

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