One of the most common skin conditions, psoriasis is an inflammatory condition of the skin that affects over 2% of the US population. Psoriasis is characterized by pink, scaly areas of skin (often on the elbows, knees, and scalp, but can occur on other parts of the body as well). Occasionally, patients will complain of itchiness associated with their psoriasis. The condition varies in severity, with milder forms responding well to topical medications and more severe forms requiring oral or injectable medications.