Psoriasis is a skin ailment characterized by red patches of skin covered in white, flaky scales. It usually appears on the elbows, knees, and trunk, but it can arise anywhere on the body. The first episode occurs between the ages of 15 and 35. It is a chronic condition that will have flare-ups and remissions for the rest of the patient's life. In the United States, 7.5 million people suffer with psoriasis. Psoriasis has been identified in approximately 20,000 youngsters under the age of ten.