You’ve undoubtedly heard the adage that “the sun is nature’s medicine,” right? Well, if you have psoriasis, it turns out that the sun has been used as medicine to treat psoriasis for as long as psoriasis has been documented! Psoriasis is an autoimmune skin condition in which skin cells proliferate rapidly, causing a buildup on the surface of the skin. This causes the scaly, red plaques that we all recognize and that characterize psoriasis. There are...