Porokeratosis. Report of three cases

The porokeratosis are a group of disorders of the skin keratinization of acquired or hereditary character. Its clinical expression is a macular or annular plaque, atrophic in the center and with well-defined hyperkeratotic edges and the histological picture is a compact parakeratotic column, called cornoid lamella. The number and distribution of lesions define the different clinical forms of porokeratosis: Mibelli, disseminated superficial actinic porokeratosis (DSAP), linear porokeratosis, palmoplantar porokeratosis and punctate porokeratosis. We report 3 cases and make a brief review of the literature.