Terra Firma-Forme Dermatosis: About a Case

Terra firma-forme dermatosis, is a clinical entity whose etiology has still not been fully defined. It is characterized by the presence of asymptomatic, dirt like hyperpigmented plaques with a slightly papillomatous surface maybe due to disorder of keratinisation; these plaques cannot be removed with ordinary cleansing but disappear completely on swabbing with 70% ethyl or isopropyl alcohol