**1. Introduction**

Psoriasis is a chronic inflammatory skin disease that progresses with remission and exacerbations [1, 2]. It constitutes an important percentage, approximately 6–8% of patients who apply to dermatology clinics [3]. Due to its high prevalence and chronic course, it is important to diagnose it early and clearly to manage patient appropriately and avoid functional losses as much as possible. In addition, in some situations that should be intervened swiftly such as erythrodermic psoriasis or generalized pustular psoriasis; the sooner we diagnose, the better we take control of disease setting.

In diagnosis of psoriasis, usually clinical observation is enough; however, in doubtful cases, histopathological examination is required as gold standard technique. However, it requires an invasive procedure and needs time for pathological preparation. With dermoscopy, we can mostly distinguish psoriasis from other resembling diseases in clinic noninvasively. Despite it not being gold standard, easily applicable and noninvasive properties of dermoscopy make it a helpful diagnostic tool and reduce the need of performing biopsies.
