Those with extensive lesions are also known as, disseminated discoid lupus erythematosus. Lupus erythematosus is a spectrum disease. Clinically, it is divided into the following types. Discoid lupus erythematosus: persistent well-defined discoid erythematous plaques with adherent scales in the center. It occurs on the face, scalp, auricles and back of the hands. It is also called disseminated discoid lupus erythematosus when the lesions are widespread and involve more areas. Subacute cutaneous lupus erythematosus: There are two main types of skin manifestations, one is the annular erythematous type, which mainly manifests as edematous erythematous plaques that may fuse into an annular polycyclic pattern; the other is the papular scaly type or scaly erythematous type, which starts as a papule and gradually expands into an erythematous plaque with a little scaling. It is often accompanied by photosensitivity, joint pain and other systemic symptoms. Systemic lupus erythematosus: The typical skin manifestation is butterfly-shaped erythema, mainly in the cheek area with edematous erythema. There are also dermatomyositis-like lesions, discoid erythema, frostbite-like lesions, vasculitis-like lesions and so on. In a small percentage of patients, macules, hemorrhagic blisters, urticaria-like vasculitis lesions and reticulocutaneous bruises may occur. Swollen lupus erythematosus: Typical lesions are exudative purplish-red edematous plaques with clear borders. The lesions may fade on their own but can recur. It occurs in exposed areas such as the head, face and back. Deep lupus erythematosus, also known as lupus lipofuscinosis: Typical lesions are subcutaneous inflammatory hard nodules or plaques that leave scars after ulceration, and are usually found on the cheeks, buttocks and arms.