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Background: In the latest few years, plasma radiofrequency ablation has turned out a good option for treatment of several benign skin lesions. The technique can be easily performed to treat skin lesions with limited tissue invasion and no residual scars or hypo/hyperpigmentation areas., Objective: The aim of this study was to assess the effects of plasma radiofrequency ablation in treatment of benign skin lesions, through clinical and reflectance confocal microscopy outcomes., Methods: Six patients who presented benign skin lesions underwent long-wave plasma radiofrequency ablation treatment with DAS medical device (Technolux, Italia). Reflectance confocal microscopy analysis was performed at baseline and after 1 month., Results: The treatment was well tolerated; only a slight erythema and a thin crust on the treated area were referred for 3-7 days after treatment. After one month from treatments, we observed the complete disappearance of the lesions and no significant signs of inflammation, redness, hypo/hyperpigmentation, or scars on the site of the treated areas; these clinical data were also confirmed by reflectance confocal microscopy analysis., Conclusions: Long-wave plasma radiofrequency ablation actually can be considered a well-tolerated, painless, safe, effective, and low-cost procedure for skin treatments., (© 2019 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)

The term pigmented purpuric dermatosis (PPD) is used for a group of mainly asymptomatic, sometimes pruritic dermatoses that are clinically characterized by an eruption of pinpoint purpuric lesions along with yellow, orange, red and/or brown, often patchy pigmented areas. Traditionally five subtypes have been distinguished, but atypical clinical patterns may also occur. Because of the variable clinical spectrum and the similar histopathologic findings, a strict nosological classification is sometimes difficult or even impossible to achieve. We report a case of PPD with atypical clinical features in a young woman, underlining the difficulties in the clinical classification of this spectrum of diseases.