RESUMO
Abstract Melanonychia is the change in the coloration of the nail plate resulting from the deposition of melanin. Among its causes are melanocytic hyperplasia, melanocytic activation and nail melanoma. Subungual follicular inclusions are histological findings of unknown etiology, possibly related to trauma. We present three cases of melanonychia of different etiologies with subungual follicular inclusions, an association that has not been well described and with an indefinite pathogenesis.
Assuntos
Humanos , Masculino , Adulto , Folículo Piloso/patologia , Melanose/patologia , Doenças da Unha/patologia , Ultrassonografia , Folículo Piloso/diagnóstico por imagem , Dermoscopia , Melanose/diagnóstico por imagem , Pessoa de Meia-Idade , Doenças da Unha/diagnóstico por imagem , Unhas/patologiaRESUMO
Abstract Dissecting cellulitis is an inflammatory, chronic, and recurrent disease of the hair follicles that mainly affects young Afro-descendent men. Trichoscopy is a method of great diagnostic value for disorders of the scalp. Clinical and trichoscopic findings of dissecting cellulitis are heterogeneous and may present features common to non-cicatricial and scarring alopecia. This article presents the trichoscopic findings of dissecting cellulitis that help in the diagnosis and consequent institution of the appropriate therapy and better prognosis of the disease.