Dermoscopy of skin infestations and infections (entomodermoscopy) - Part II: viral, fungal and other infections,

Abstract In addition to the infestations and bacterial infections reported in part I, the study of entomodermoscopy also involves descriptions of dermoscopic findings of a growing number of viral and fungal infections, among others. In this article, the main clinical situations in viral infections where dermoscopy can be useful will be described, that is in the evaluation of viral warts, molluscum contagiosum, and even in recent scenarios such as the COVID-19 pandemic. As for fungal infections, dermoscopy is particularly important, not only in the evaluation of the skin surface, but also of skin annexes, such as hairs and nails. The differential diagnosis with skin tumors, especially melanomas, can be facilitated by dermoscopy, especially in the evaluation of cases of verruca plantaris, onychomycosis and tinea nigra.

Dermatologia comparativa: verrugas virais / Comparative dermatology: viral warts

O caso demonstra apresentação atípica de verrugas vulgares no dorso das mãos de paciente do sexo masculino de 53 anos e com história prévia de tratamento para linfoma de Hodgkin. As pápulas espiculadas, confluentes, de superfície rugosa, com centro ceratótico e ligeiramente descamativas são comparáveis a cristais de rocha.

This case demonstrates an unusual presentation of verruca vulgaris on the dorsum of the hands in a 53 year-old man with previous history of treated Hodgkin lymphoma. The spiculate, confluent and rough-surfaced papules, with slight desquamation and keratotic core are comparable to rock crystals.