<prompt> Pityriasis rotunda is:Fungal infectionBacterial infectionPityriasis affecting nailVariant of Ichthyosis  <response>: Pityriasis rotunda - Pityriasis rotunda is described as a persistent, large, sharply defined circular patch of dry ichthyosiform scaling with no inflammatory changes. Variant of Ichthyosis Fixed, annular, scaling, dry-skin change More often seen in the African and Asian races Associated with neoplasia, paicularly Hepatocellular carcinoma. 