Psoriasis is a chronic, autoimmune disease that appears on the skin as red scaly patches. Any part of the body can be affected but at least half of all people with psoriasis have it on their scalp. Scalp psoriasis can be very mild with only fine scaling or more severe with thick, crusted plaques covering the entire scalp. Scalp psoriasis can be uncomfortable and often results in chronic itching, burning and pain of the scalp. Fortunately, many treatments are available for scalp psoriasis including prescription strength shampoos, topical sprays, topical foams, and liquids. Also, injections of diluted steroid medications can be used for treatment. Laser therapy consisting of UVB light is another safe and effective treatment for scalp psoriasis. Systemic therapies are not commonly used just for scalp psoriasis but are an option if psoriasis is present elsewhere, joint pain is present, or the psoriasis is moderate to severe.