Pityriasis rotunda is a rare dermatosis characterized by sharply defined, hypo- or hyperpigmented circular plaques, located in the trunk and proximal extremities. There are two described subtypes: type I affects Black or Eastern patients without family history of pityriasis rotunda and is associated with simultaneous systemic illness; type II occurs in Caucasians with a family history of pityriasis rotunda and without underlying disease. In this article we report the case of type I pityriasis rotunda in a 39-year-old black woman.
Adult; Neoplasms; Skin diseases, genetic; Skin manifestations
