A condition characterized by the eruption of circumscribed, discrete and confluent,reddish,silvery scaled maculopapules; the lesions occur pre-eminently on the elbows,knees,scalp and trunk;and microscopically show characteristic parakeratosis and elongation of rete ridges. #learnwithinsighthomoeo #insighthomoeo #bhms #easymm #materiamedica