Lupus erythematosus is a disease that we often hear about, but many people do not know much about it. Lupus erythematosus is an autoimmune disease that affects all organs of the body with complex symptoms. The most important manifestation of lupus erythematosus is skin lesions, but what are its other characteristics? Let’s learn more about it. There are several different types of lupus erythematosus, the mildest and most common of which is discoid lupus erythematosus. At the onset of discoid lupus erythematosus, a large bright red patch of skin appears, and these lesions are about the size of a soybean, with some scales adhering to the surface. The plaques are mainly located in areas exposed to sunlight, such as the face and scalp, and can cause hair loss. Deep lupus erythematosus lesions are usually nodular or plaque-like, skin-colored or pale red, and often occur on the face, arms and buttocks, leaving traces of skin atrophy even after healing. SLE is an autoimmune disease that not only manifests itself on the skin, but also affects many systems and organs throughout the body, causing more serious lesions. In subacute lupus erythematosus, the lesions are usually erythematous or papulosquamous, and patients may also have systemic symptoms such as hair loss, fever, and joint pain. Why do you get lupus erythematosus? There is more than one reason for this. Genetic factors are the cause of many patients with lupus erythematosus. As long as the genetic factors for the disease are present in the body, the disease can develop once it is triggered by certain environmental factors. Patients with endocrine abnormalities may also develop lupus erythematosus, especially women and some men with testicular hypoplasia, who are at higher risk of developing the disease. In addition, the disease can be triggered by physical and chemical factors in the external environment, such as ultraviolet radiation and chemical irritation. Some patients can also develop the disease after consuming some seafood, mushrooms or pods of plants in their daily diet. Patients suffering from SLE can easily induce hypertension, and after hypertension occurs, it will aggravate the kidney lesions of patients and make the disease more serious. Therefore, once this disease occurs, it must be treated actively and timely in order to better control the disease and prevent it from deteriorating.