Dermoscopic features of lichen planopilaris in Northern Iran: a prospective observational study

Hojat Eftekhari, Seyyede Zeinab Azimi, Rana Rafiei, Abbas Darjani, Narges Alizadeh, Elahe Rafiei, Reyhaneh Ghadarjani, Kaveh Gharaei Nejad
International Journal of Dermatology 2019 August 1

BACKGROUND: Dermoscopy can be helpful in assessing nonpigmented lesions and inflammatory processes like lichen planopilaris (LPP).

MATERIAL & METHODS: In this observational prospective study, 81 patients with a cicatricial alopecic patch on their scalp were included and underwent dermatologic examination. A biopsy was taken from the active part of the lesion based on dermoscopy evaluation.

RESULTS: Analysis of 44 patients with definite diagnosis of LPP revealed that the mean age at the time of presentation was 44.05 ± 12.62 years. More than 77% of patients had at least one form of the follicular opening disorder. About 75% of patients had shaft disorders. The most common pattern of pigmentation was milky-red (97.73%). The irregular and ectatic vascular network were seen in 59.09% of patients. Patients with coiled and twisted hairs, small yellow dots, large yellow dots, and peripilar sign were more likely to have shorter disease duration (P < 0.05). Those with overall shaft disorders were younger (P = 0.02). Small yellow dots (P = 0.025) and peripilar sign (P = 0.039) were more common in female patients.

CONCLUSION: Dermoscopy can be a helpful diagnostic tool in differentiating LPP among patients with primary cicatricial alopecia (PCA). Larger cohort studies are recommended to find the role of demographic factors in predicting the dermoscopic patterns among LPP patients.

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