Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Psoriasis is an autoimmune skin disorder, occurring when skin cells grow too quickly, usually on body parts such as elbows, knees, scalp, as well as nails, trunk and legs, causing inflammation, pain, swelling and redness. Having a strong genetic component, psoriasis is believed to cause other skin infections and cardiac diseases as well. A new study led by US scientists showed that patients with severe psoriasis are 46 % more likely to get a diabetes diagnosis than people without the skin disorder. Learn more about psoriasis and diabetes in this book.