Characterization of the dermoscopic features of common psoriatic lesions

Abstract

Objective: To observe the dermoscopic features of psoriasis vulgaris in order to provide evidence basis for differential diagnosis of psoriasis. Methods: From January 2016 to February 2018, 86 cases of psoriasis, 11 of which confirmed by histopathology, were enrolled in this study. Common lesions included papule, erythema, plaque, scalp rash, palmoplantar rash, nail psoriasis and post-treatment lesions. The background color, scale color, scale distribution, vascular morphology, vascular arrangement and vascular orientation were observed using a dermoscope. Results: Typical dermoscopic features of psoriasis included bright red background, silver scales, scattered distribution of dotted vessels and small glomerular vessels arranged in a uniform pattern. These features varied with the types of lesions. Conclusions: Psoriasis displays typical dermoscopic features. Specific dermoscopic features of each type of lesion can facilitate clinical diagnosis of psoriasis.

Keywords

• psoriasis vulgaris
• lesion
• dermoscope
• dermoscopic features