Psoriasis is a widespread skin condition where the skin develops areas that become thick. It is usually found to be covered with silvery scales . Even though psoriasis is considered a skin disease, it is really the result of a disordered immune system . It occurs when skin cells suddenly rises from below the surface of the skin and pile up on the surface before they can mature. Generally this process (also called turnover) takes about a month, however in psoriasis it may occur in only a few days. These areas become reddened, inflamed, patches with white scale on them. It tends to be worst in those with cancer, AIDS or autoimmune disease . Psoriasis areas are worsened by scratching and small skin injuries or irritations. Psoriasis may itch or burn. The skin may crack or split in areas that bend . Psoriasis is considered as an autoimmune disease where genetic and environmental factors have a significant role. Psoriasis is a dry, inflammatory and ugly skin disorder, which can involve the entire system and is not contagious . The most frequently affected sites are the scalp, tips of fingers and toes, palms, soles, umbilicus, gluteus, under the breasts and genitals, elbows, knees, shin etc