Dermoscopic signs of lichen planus

Abstract

A 55-year-old woman presented with a 3-month history of violaceous, itchy, flat-topped papules located on her forearms (figure 1), trunk and legs. There was no history of drug intake. Figure 1 Clinical presentation of active lichen planus. Purplish-violaceous, polygonal-shaped, flat-topped small papules located on the forearms. The surface is slightly shiny showing a network of fine white lines (‘Wickham’s striae’). Coalescence into linear plaques is related to Koebner phenomenon. Excoriations are also present. The forearm lesions were studied with a hand-held dermoscope (δ 10; Heine Optotechnik, Germany) revealing yellow dots and Wickham striae (WS), surrounded by radial linear and dotted capillaries (figure 2). Mature …