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Image Correspondence
ARTICLE IN PRESS
doi:
10.25259/IJPGD_46_2024

Bedside Demonstration of Fluorescence Using 365 nm Wood`s Lamp Mode of Dermoscope in Pityriasis Versicolor

Department of Dermatology, Venereology and Leprosy, Command Hospital Air Force Bengaluru, Bengaluru, Karnataka, India

*Corresponding author: Shrinivas Patil, Department of Dermatology, Venereology and Leprosy, Command Hospital Air Force Bengaluru, Bengaluru, Karnataka, India. shrinivas93doctor@gmail.com

Licence
This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-Share Alike 4.0 License, which allows others to remix, transform, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.

How to cite this article: Patil S, Bhatnagar A, Mitra D. Bedside Demonstration of Fluorescence Using 365 nm Wood`s Lamp Mode of Dermoscope in Pityriasis Versicolor. Indian J Postgrad Dermatol. doi: 10.25259/IJPGD_46_2024

Pityriasis versicolor, although clinical diagnosis is usually made by the presence of hypo or hyperpigmented scaly macules [Figure 1], can sometimes present with atypical features, necessitating additional diagnostic modalities. Wood’s lamp examination, particularly in the fluorescence can aid in the rapid diagnosis of this condition by highlighting the characteristic yellow-green fluorescence of the causative organism, Malassezia spp.

Multiple discrete to coalescing hyperpigmented brownish scaly macules distributed over the right side of trunk.
Figure 1:
Multiple discrete to coalescing hyperpigmented brownish scaly macules distributed over the right side of trunk.

Dermoscopy, with its ability to magnify and visualise subtle skin changes, further enhances the diagnostic accuracy of Wood’s lamp examination, especially at the bedside. Bedside demonstration of fluorescence using the 365 nm Wood’s lamp mode of dermoscopy [Figure 2] is a valuable tool in the diagnosis of pityriasis versicolor, offering a rapid and non-invasive means of confirming the clinical suspicion. The green-yellow fluorescence observed in pityriasis versicolor lesions under Wood’s light is attributed to the presence of pityrialactone [Figure 3]. Figure 4 shows photograph of pityriasis versicolor as seen through woods lamp magnifier showing green-yellow fluorescence. Early diagnosis facilitated by this technique allows for the timely initiation of appropriate therapy, thereby improving patient outcomes and reducing the risk of complications.

Demonstration of fluorescence using non-contact dermoscopy (DERMLITE DL5, 365 nm Woods lamp mode) showing yellow-green fluorescence.
Figure 2:
Demonstration of fluorescence using non-contact dermoscopy (DERMLITE DL5, 365 nm Woods lamp mode) showing yellow-green fluorescence.
Contact dermoscopy (DERMLITE DL5, 365 nm woods lamp mode, ×10) showing yellow-green fluorescence.
Figure 3:
Contact dermoscopy (DERMLITE DL5, 365 nm woods lamp mode, ×10) showing yellow-green fluorescence.
Photograph showing green-yellow fluorescence as seen through woods lamp magnifier.
Figure 4:
Photograph showing green-yellow fluorescence as seen through woods lamp magnifier.

Ethical approval

Institutional Review Board approval is not required.

Declaration of patient consent

The authors certify that they have obtained all appropriate patient consent.

Conflicts of interest

There are no conflicts of interest.

Use of artificial intelligence (AI)-assisted technology for manuscript preparation

The authors confirm that there was no use of artificial intelligence (AI)-assisted technology for assisting in the writing or editing of the manuscript and no images were manipulated using AI.

Financial support and sponsorship

Nil.


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