Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Derived from the Greek word ’psora’ meaning itching, psoriasis affects about 3% of people worldwide, usually developing in patients between ages of 15 and 35, but can appear at any age. Though it is an autoimmune disease, not a contagious illness, psoriasis can sometimes be the cause of discrimination and social exclusion. Today, greater awareness of psoriasis’s impact on one’s personality is promoted by non-profit organizations, technological and pharmacological associations, online forums and blogs, contributing to the management of the skin disorder, and helping affected individuals to cope with it more efficiently. Learn more about the disease and its treatment in this book.