Polymorphous light eruption, or PLE, is the most common skin disease caused by sunlight. It is also called polymorphic light eruption (PMLE). Other variants include juvenile spring eruption and benign summer light eruption. PLE is not the same as sunburn. PLE arises spontaneously in people who are sensitive to ultraviolet light and is characterized as one type of photodermatosis. please visit: https://www.sunsaferx.com/health-and-wellness/polymorphous-light-eruption/