Systemic lupus erythematosus (SLE or lupus) is a chronic autoimmune disease that can affect multiple organs and tissues in the body. The exact prevalence of lupus is difficult to determine as it can vary depending on the population studied and the diagnostic criteria used.
According to the Lupus Foundation of America, approximately 1.5 million Americans have lupus, and it is estimated that 5 million people worldwide have the condition. Lupus is more common in women than in men, with women being diagnosed about nine times more often than men. It is also more common in certain populations, including African Americans, Hispanics/Latinos, Asians, and Native Americans.
Overall, lupus is considered a relatively rare disease, but it can have significant impacts on those who are affected by it.