Dermoscopy as a diagnostic key of Pityriasis Lichenoides Et Varioliformis Acuta (PLEVA).

Diagnosis of Pityriasis Lichenoides Et Varioliformis Acuta is based on the characteristic pattern of lesions in different stages of development, ranging from erythematous maculo-papules to papules with a crusted and/or necrotic centre. However, it may raise the differential diagnosis with other entities. It is therefore not uncommon to have to perform skin biopsies to reach a diagnosis, including in infantile cases. In this study we report three cases of patients with Pityriasis Lichenoides Et Varioliformis Acuta, highlighting the correlation between clinical, dermoscopic and histological features. Observation of the dermatoscopic findings described, such as punctate or glomerular vessels and erythematous globules surrounding a homogeneous orange or crusty central area, may allow a rapid diagnosis, avoiding invasive techniques.