Dermoscopic Perspective of Pityriasis Versicolor in a Cross-Sectional Study.

Autor: Vishwanath T; Department of Dermatology, Seth G.S. Medical College and K.E.M. Hospital, Parel, Mumbai, Maharashtra, India., Kapadia FM; Department of Dermatology, Seth G.S. Medical College and K.E.M. Hospital, Parel, Mumbai, Maharashtra, India., Mahajan SA; Department of Dermatology, Seth G.S. Medical College and K.E.M. Hospital, Parel, Mumbai, Maharashtra, India., Kharkar VD; Department of Dermatology, Seth G.S. Medical College and K.E.M. Hospital, Parel, Mumbai, Maharashtra, India., Chikhalkar SB; Department of Dermatology, Seth G.S. Medical College and K.E.M. Hospital, Parel, Mumbai, Maharashtra, India., Gole PV; Department of Dermatology, Seth G.S. Medical College and K.E.M. Hospital, Parel, Mumbai, Maharashtra, India., Iyer M; Self Employed Statistician, San Jose, USA., Shah AJ; Department of Dermatology, Seth G.S. Medical College and K.E.M. Hospital, Parel, Mumbai, Maharashtra, India.
Jazyk: angličtina
Zdroj: Indian dermatology online journal [Indian Dermatol Online J] 2024 Feb 13; Vol. 15 (2), pp. 218-225. Date of Electronic Publication: 2024 Feb 13 (Print Publication: 2024).
DOI: 10.4103/idoj.idoj_319_23
Abstrakt: Background: Pityriasis versicolor is a common superficial fungal infection which is usually easily diagnosed with Wood's lamp examination and 10% potassium hydroxide mount. However, these modalities have varying sensitivity and specificity.
Aims and Objectives: This study aimed to ascertain the dermoscopic features of pityriasis versicolor lesionally as well as perilesionally using dermoscopy, a non-invasive diagnostic tool.
Materials and Methods: In this cross-sectional study, consecutive patients with pityriasis versicolor underwent dermoscopic examination of lesions and 2 cm around lesions, noting lesional and perilesional features. Semi-objective grading of pigmentation, scaling, and vascularity was done. The association between parameters was determined using heat maps and violin plots with Kolmogorov-Smirnov test. Lesional analysis was performed since lesions at different sides showed disparate features.
Results: A total of 353 lesions from 233 patients (males = 150/233; 64.38% and females = 84/234; 36.05%) were studied. On lesional dermoscopy, pigmentary and scaling abnormalities were universal. 258/353 (73.1%) of lesions showed vascular abnormalities. Perilesionally, scaling (223/353; 63.17%) followed by pigmentation (205/353; 58.07%) and vascular changes (111/353; 31.44%) constituted the most common dermoscopic abnormalities and were noted in 294/353 (83.29%) of lesions overall. Increased disease duration corresponded with increased intensity of perilesional pigmentation alterations, perifollicular ( P = 0.04), and follicular scales ( P = 0.02).
Conclusion: Awareness of dermoscopic features could improve the diagnostic accuracy in doubtful cases of pityriasis versicolor. Vascular findings are common and may point to an underlying inflammatory pathogenesis. Perilesional findings constitute early dermoscopic features of pityriasis versicolor and hint at the need for treatment beyond the confines of lesions. Larger follow-up studies and research into immunopathogenesis may be of further benefit.
Competing Interests: There are no conflicts of interest.
(Copyright: © 2024 Indian Dermatology Online Journal.)
Databáze: MEDLINE
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