Psoriasis is a tricky condition. It’s an autoimmune disease, meaning it happens because your immune system isn’t working the way it should. It sends out messages, speeding up skin growth. New cells ...

Psoriasis can involve any area of the skin. The most common areas are those that are prone to significant trauma from rubbing or scratching. These areas include the elbows, knees and scalp. However, ...

Share on Pinterest A study found a link between vitamin D levels and the severity of psoriasis. Raymond Forbes LLC/Stocksy Psoriasis is an autoimmune skin disorder characterized by raised, inflamed ...