Psoriasis Quiz

Once thought to be a skin disorder, psoriasis is now understood to be a condition originating in the immune system that can appear in many different forms and can affect any part of the body, including the nails and scalp. The patches may be silver or red. It is characterized by skin cells that multiply up to 10 times faster than normal. As underlying cells reach the skin's surface and die, their sheer volume causes raised, red patches covered with white scale.