Systemic lupus erythematosus epidemiology and demographics

Systemic lupus erythematosus Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Raviteja Guddeti, M.B.B.S. [2]

Epidemiology

Previously believed to be a rare disease, Lupus has seen an increase in awareness and education since the 1960s. This has helped many more patients get an accurate diagnosis making it possible to estimate the number of people with lupus. In the United States alone, it is estimated that between 270,000 and 1.5 million people have lupus, making it more common than cystic fibrosis or cerebral palsy. The disease affects both females and males, though young women are diagnosed nine times more often than men. SLE occurs with much greater severity among African-American women, who suffer more severe symptoms as well as a higher mortality rate. Worldwide, a conservative estimate states that over 5 million people have lupus.

Although SLE can occur in anyone at any age, it is most common in women of childbearing age. It affects 1 in 4000 people in the United States, with women becoming afflicted far more often than men. The disease appears to be more prevalent in women of African, Asian, Hispanic and Native American origin but this may be due to socioeconomic factors. People with relatives who suffer from SLE, rheumatoid arthritis or thrombotic thrombocytopenic purpura are at a slightly higher risk than the general population.