Lupus erythematosus is systemic lupus erythematosus, and a positive anti-SM antibody is very likely to be systemic lupus erythematosus, but the diagnosis of systemic lupus erythematosus can not be confirmed by a positive anti-SM antibody alone, and it needs to be combined with the patient’s medical history and symptoms, and other relevant auxiliary examinations for comprehensive analysis and judgment.
SLE is an autoimmune disease in which pathogenic autoantibodies and immune complexes are formed and mediate organ and tissue damage. Clinically, there are often multiple systemic manifestations of SLE, and a variety of autoantibodies represented by antinuclear antibodies are present in the serum.
Anti-SM antibody is a marker antibody for SLE with high specificity, therefore, positive anti-SM antibody should be highly alert to the possibility of SLE.
However, a positive anti-SM antibody alone cannot confirm the diagnosis of SLE.
The diagnosis of SLE needs to be analyzed in conjunction with the patient’s medical history and symptoms, as well as relevant auxiliary examinations. The diagnosis of SLE can be confirmed by the presence of pteronyssinus erythematosus, discoid erythema, photosensitivity, oral ulcers, arthritis, plasma membrane inflammation, renal lesions, neuropathy, hematological disorders, positive anti-dsDNA antibodies, positive antiphospholipid antibodies, and positive antinuclear antibodies, etc. The diagnosis of SLE can be confirmed by the presence of a positive anti-SM antibody.
If anti-SM antibody is found to be positive, it is recommended that the patient go to the hospital in time to improve the relevant examinations, and follow the doctor’s instructions to standardize the treatment after a clear diagnosis.