Lupus Eratosthenes is a chronic and systemic disease that affects the nervous system and is characterized by damage muscles and joints, and may also give rise to injury in certain organs (such as liver, kidneys, or lungs), and very characteristically, redness in the skin, both in face and in other areas of the body. It mainly affects women, in a ratio of 9 to 1 with respect to men. The causes by which develops this pathology, which has its origin in the formation of antibodies, they are unknown at present, although it was determined the existence of a certain relationship between sunlight and the same, because many of those suffering from it showed previously photosensitivity to ultraviolet rays. Are also suspected over a possible linkage of genetic type with the same, and in the case of women, comes to consider that your hormone production of estrogen could find largely behind it, being the reason for its increased incidence..