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Research Paper | Dermatology | India | Volume 12 Issue 3, March 2023 | Rating: 5.6 / 10

Clinico-Dermoscopic Features of Psoriasis, Lichen Planus, and Pityriasis Rosea in Patients attending Dermatology Out Patient Department at J.J.M Medical College, Davangere

Dr. Chethan Kumar ^[2] | Dr. Preetham H S ^[2] | Dr. Sugareddy ^[4]

Abstract: Background: Papulosquamous skin diseases can be challenging to diagnose, especially in dark skin phenotypes. Dermoscopy is reported to be helpful and avoid invasive procedures like biopsy. Few data available on its use in Fitzpatrick skin type IV or darker. Objective: To describe dermoscopic features in plaque type psoriasis (PP), Lichen planus (LP), and Pityriasis rosea (PR) patients attending Dermatology OPD at JJM medical college, Davangere and to compare the findings with published data. Methods: A descriptive cross-sectional study conducted at a tertiary care centre Bapuji Hospital, JJM medical college, Davangere from January 2022 to December 2022. 100 patients of plaque psoriasis, 50 with LP and 25 with Pityriasis rosea were enrolled. Dermoscopic vascular and non-vascular features from 340 lesions were analysed. Results: Out of 175 patients enrolled, 99 (56.5%) were males and 76(43.5%) were females. Median age among plaque psoriasis was 49, LP was 51 and among P.rosea was 22.5. In PP lesions red dots were found 70% and white scales in 53.3%. In LP lesions the background was violet in 70.8% and 37.5% revealed Wickham?s striae. In PR lesions light red background was found in 70%, peripheral white scales in 54.2% but no vessels were detectable. Conclusion: Dermoscopy features in PP, LP, and PR in dark skin are mostly similar in those with light skin. It is an additive and supportive tool to the clinical diagnosis.

Keywords: Dermoscopy, papulosquamous, plaque psoriasis, Lichen planus, pityriasis rosea

Edition: Volume 12 Issue 3, March 2023,

Pages: 1338 - 1343