What is psoriasis?
Psoriasis is a skin disorder where there the surface of the skin becomes itchy and dry. It may affect small areas of the skin (such as the elbows) or very large areas. Normally the patches appear silvery in color and feel dry to the touch. Treatments for this condition prevent the accumulation of the silvery scale and irritation of the skin. Psoriasis is considered to be an autoimmune condition, and it may be treated by a variety of medications and treatments, including steroid cream, UV light, and immune modulatory medications such as Humira (adalimumab).
There are other conditions that cause itchy and dry skin. These include eczema, dermatitis, and lichen planus.
Some people with psoriasis develop arthritis, which causes joint pain, stiffness and swelling. This is called psoriatic arthritis.