Dermoscopy and patch testing in patients with lichen planus pigmentosus on face: A cross-sectional observational study in fifty Indian patients

Abstract

The present study describes the dermoscopic findings of facial lesions in LPP. Our patch test results suggest a probable role of allergens in causing LPP on the face.

Hyperpigmented Upper Eyelid: A Clue to the Diagnosis of Facial Lichen Planus Pigmentosus in a Patient with Frontal Fibrosing Alopecia

“…The finding of a classic LPPig on the upper eyelid, sharing typical LPPig dermoscopy features [2, 5] and characteristic histopathological findings [9-11], may call attention to the fact that the eyelid involvement may not be anecdotal. Instead, it may be an important clue to the diagnosis of LPPig that helps differentiating it from other common photodermatoses such as melasma because the upper eyelid is a well-known sun-protected area.…”

“…2). Dermoscopy interpretation and description were based on studies conducted by Sharma et al [2] and Pirmez et al[5]. …”

“…First described in 1974 by Bhutani et al [1], in Indian patients, lichen planus pigmentosus (LPPig) is considered a rare variant of classic lichen planus [2, 3]. It most commonly affects female individuals with high skin phototypes (Fitzpatrick skin phototypes III to VI) and it is rarely seen in fair-skinned people [3, 4].…”

A novel scale for measurement of acquired dermal macular hyperpigmentation severity

“…An important difference to be considered, particularly in the Indian subcontinent, is post-chikungunya pigmentation. We would also like to highlight other dermoscopic findings including sparing of adnexal openings, exaggeration of normal pigment pseudonetwork, and owl's eye/ targetoid appearance 4,9. 2a and b).…”

“…The main risk factors associated with scrotal BCC are expobasal cell carcinoma using in situ hybridization, and Gibson et al8 reviewed 51 cases of basal cell carcinoma in the perianal and genital region also using in situ hybridization to test for the presence of HPV. Verhoeven et al9 performed a case-control study in the Netherlands to detect factors related to the etiology of scrotal cancer. Verhoeven et al9 performed a case-control study in the Netherlands to detect factors related to the etiology of scrotal cancer.…”