Lupus Erythematosus
Basics
Description
Systemic lupus erythematosus (SLE) is a multisystem autoimmune disease characterized by production of antibodies to various components of the cell nucleus and tissues, in conjunction with a variety of clinical manifestations.
Epidemiology
- Age: 20% of lupus begins in childhood, but it is very rare in <5 years old.
- Female-to-male ratio: between 3 to 5:1 (prepubertal) and 9 to 10:1 (postpubertal)
- SLE occurs about 3 times more often in African Americans than Caucasians. It is also more common in Hispanic, Asian, and Native Americans.
Incidence
- Peak incidence: between ages 15 and 40 years
- Incidence in children is from 10 to 20 cases per 100,000 children per year.
Prevalence
5,000 to 10,000 children in the United States
Risk Factors
Genetics
- Increased frequency in 1st-degree family members of patients with SLE
- 10% of patients have ≥1 affected relative.
- Concordance rate of 25–50% in monozygotic twins and 5% in dizygotic twins
- Some major histocompatibility complex antigens are associated with increased incidence of lupus, such as HLA-DR2 and DR3 in whites and DR2 and DR7 in blacks.
Etiology
Lupus is an autoimmune disease, with multiple genetic, environmental, and hormonal factors playing a role.
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Citation
Cabana, Michael D., editor. "Lupus Erythematosus." 5-Minute Pediatric Consult, 8th ed., Wolters Kluwer, 2019. Pediatrics Central, peds.unboundmedicine.com/pedscentral/view/5-Minute-Pediatric-Consult/617779/all/Lupus_Erythematosus.
Lupus Erythematosus. In: Cabana MDM, ed. 5-Minute Pediatric Consult. Wolters Kluwer; 2019. https://peds.unboundmedicine.com/pedscentral/view/5-Minute-Pediatric-Consult/617779/all/Lupus_Erythematosus. Accessed December 11, 2024.
Lupus Erythematosus. (2019). In Cabana, M. D. (Ed.), 5-Minute Pediatric Consult (8th ed.). Wolters Kluwer. https://peds.unboundmedicine.com/pedscentral/view/5-Minute-Pediatric-Consult/617779/all/Lupus_Erythematosus
Lupus Erythematosus [Internet]. In: Cabana MDM, editors. 5-Minute Pediatric Consult. Wolters Kluwer; 2019. [cited 2024 December 11]. Available from: https://peds.unboundmedicine.com/pedscentral/view/5-Minute-Pediatric-Consult/617779/all/Lupus_Erythematosus.
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