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Abstract
[2] Although the employment of a liquid interface and direct contact between the scope and the skin enhances the depth of visualization in nonpolarized dermoscopy, contact nonpolarized dermoscopy with immersion fluid can still not attain the dermal depth of polarized dermoscopy.[...]in the era of easy availability of dermoscopes of different makes, and the fact that majority of the diagnostic and histologically quantifying alterations in lichen planus pigmentosus are localized to the dermis, this study should have employed a dermoscope with polarizing mode.[...]one of our authors (EE) has reported dermoscopic differentiation between lichen planus pigmentosus and ashy dermatosis.[...]in most of the dermoscopy figures in the study being discussed, there is a conspicuous diffuse light to dark-brown background, faint erythema along the exaggerated pigment network and larger dark-colored structures (clods or blotches), which have not been commented upon.Authors have further described a novel dermoscopic finding in lichen planus pigmentosus, the 'targetoid lesion' (depicted in original [Figure 6]), characterized by "a central dot surrounded by a hypopigmented halo," and correlated it with follicular plugging on histopathology.[...]we recommend: (a) approach to dermoscopic characterization of any condition should be systematic and dermoscopic features must be closely examined before committing a specific feature to the condition being studied, (b) using the appropriate type of dermoscopic mode (polarized dermoscopy vs nonpolarized dermoscopy) depending on the condition under evaluation and ensuring that the details of the same are mentioned in the study.