Pathophysiology of Psoriasis: Current Concepts

The word ‘psoriasis’, is derived from the Greek word “psora” meaning “itch” or “scurf” or “rash”, although most patients suffering from the condition do not complain of itching. It has been known since ancient times and was originally considered a type of leprosy. For quite some time now, it is one of the most common human skin diseases. Up to a few deca‐ des back, psoriasis was considered to be a chronic inflammatory dermatosis with albeit, ge‐ netic factors involved in the pathogenesis.