Abstract
One hundred twenty-five million people worldwide, among them around 2% to 3% of the total population is having Psoriasis, according to the World Psoriasis Day consortium. It is a genetic disease in which scaly, raised plaques appear on the skin. Psoriasis has been known since biblical times, and since then it is a mystery disease. Now we know many molecular and immune mechanisms for the development of psoriasis, but we still cannot fully understand what is considered the cause and what the effect is. In this article, we will give a general description of the disease, touch on its pathogenesis and tell the history of the study and treatment of psoriasis.
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