Is cutaneous lupus erythematosus contagious?
May 26, 2022
Source: Cainiu Health
Dr. Wang Xiaoyan
Introduction
Systemic lupus erythematosus (SLE) is an autoimmune disorder caused by dysregulation of the immune system—not an infectious agent—and therefore is not contagious. In contrast, infectious diseases are caused by pathogens such as bacteria or viruses and can be transmitted from person to person. SLE affects only the patient’s own body systems, including the skin, serous membranes, joints, kidneys, and central nervous system.
Lupus erythematosus encompasses several subtypes, including discoid lupus erythematosus (DLE), subacute cutaneous lupus erythematosus (SCLE), systemic lupus erythematosus (SLE), deep (or tumid) lupus erythematosus, neonatal lupus erythematosus, and drug-induced lupus erythematosus. So, is lupus erythematosus contagious? The details are as follows:
Lupus erythematosus results from dysregulation of the body’s own immune system and is not caused by any pathogen; therefore, it is not contagious. By definition, infectious diseases are those caused by pathogens—such as bacteria or viruses—that can spread from person to person.
Lupus erythematosus affects only the patient’s own body systems—including the skin, serous membranes, joints, kidneys, and central nervous system—and does not pose a transmission risk to others. Thus, if you or someone around you has lupus, there is no need for excessive anxiety; avoiding undue psychological stress is important.
Common early symptoms of lupus erythematosus include fever, fatigue, weight loss, and joint or muscle pain. In the initial stages, many patients experience nonspecific symptoms that may be easily mistaken for other conditions, making early diagnosis challenging and sometimes leading to misdiagnosis. Some patients develop characteristic rashes—such as discoid lesions or malar (butterfly-shaped) facial rashes. Prompt medical evaluation and treatment can significantly reduce damage to other organs or systems.
