Psoriasis is a chronic autoimmune disorder that causes an overproduction of skin cells. This leads to the development of thick, red patches on the skin, covered with silvery scales. The condition can affect any part of the body, but it is most commonly found on the scalp, elbows, and knees. If you think you may have psoriasis, there are several ways to determine if you have the condition. Look for common symptoms of psoriasis. These include red patches of skin covered with silvery scales, itching, and dryness of the skin. In...