What is the difference between lupus erythematosus and urticaria symptoms?

Lupus Erythematosis is an autoimmune disease. At first, the patient's skin is mainly manifested as one or several bright red plaques, with scales on the surface, butterfly erythema on the face, and the condition will worsen after sunlight exposure. Urticaria is mainly caused by skin allergic reaction caused by contact with allergens, mainly manifested as red papules, which will gradually merge into a wheal mass, often accompanied by skin itching.