Epidemiology of systemic lupus erythematosus in Latin America.

Systemic lupus erythematosus (SLE) is a chronic autoimmune disease that affects several organs, causing significant morbidity and increased mortality. It's more frequent in young, fertile women and can appear in all ethnic groups. The worldwide prevalence report indicates that there are at least 5 million patients with SLE. Although this disease can be found in every geographic region, certain races are more affected, such as Afro-American, Hispanic, and Asian populations. Furthermore, most of the epidemiologic information comes from Europe or the USA. In Latin America, only a few countries have reported data, like Argentina, Colombia, or Mexico, and even in these countries, the numbers vary.