What are clinical features of psoriasis?

➢ Psoriasis most frequently affects the skin of the elbows, knees, scalp, lumbosacral areas, intergluteal cleft, glans penis, and vulva. ➢ Nail changes on the fingers and toes occur in 30% of cases. ➢ In most cases psoriasis is limited in distribution, but it can be widespread and severe. ➢ Mild disease is treated topically with ointments containing corticosteroids or other immunomodulatory agents ➢ Whereas more severe disease is treated with phototherapy (which has immunosuppressive effects) or systemic therapy with immunosuppressive