Dactylitis and Ungual Tuberculosis: An Atypical Presentation of the Disease.

Introduction: Tuberculosis is a common infection caused by in developing countries. Among the extrapulmonary forms of tuberculosis, cutaneous tuberculosis is rare, and even dermatologists are less familiar with its ungual manifestations.

Case Presentation: We present an exuberant case of ungual tuberculosis in a patient with no personal or family history of immunosuppression, which is the first manifestation of the disseminated form of the disease.

Description of the most severe signs in nail lichen planus: a strategy to contribute to the diagnosis of the severe stage.

Background: Severe nail lichen planus (NLP) does not respond well to treatment and is often poorly considered and described in detail.

Objective: We sought to describe the characteristics of severe NLP.

Methods: A retrospective data analysis was performed, including the photographic records of the most compromised nails of patients with NLP over 18 years old, who consulted between 2009 and 2019 at the Instituto de Dermatologia Professor Rubem David Azulay in Rio de Janeiro, Brazil.