About Psoriasis Psoriasis is an illness which inconveniences the patient truly , mentally and socially. This is a persistent sporadically intense, non - infectious, backsliding skin sickness. Rosy papules and plaques covered with thick shiny white scale are the old style injuries. As the pace of division of cells in upper layer is expanded hugely, it is covered by flaky appearance. Frequently the sore beginnings with extreme dandruff in the scalp. Elbow , knees, back, stomach, hip ,