For much of the public, psoriasis is an uncomfortable, unsightly skin condition. However, for those with psoriasis, it means an often painful and intensely itchy chronic autoimmune disease that appears on the skin. According to the National Psoriasis Foundation, psoriasis is the most common autoimmune disorder in the United States, affecting up to 7.5 million people (NPF, 2012).

There are five official types of psoriasis: plaque, guttate, inverse, pustular, and erythrodermic, psoriasis. There are also subcategories of psoriasis types, which appear differently depending on where it is located on the body.