The natural history of pediatric-onset discoid lupus erythematosus

Area of Science:

• Pediatric rheumatology
• Dermatology
• Immunology

Background:

• Pediatric discoid lupus erythematosus (DLE) is a rare condition.
• The likelihood of DLE progressing to systemic lupus erythematosus (SLE) in children is not well-established.

Purpose of the Study:

• To investigate the risk of pediatric DLE transforming into SLE.
• To describe the clinical and laboratory characteristics of pediatric DLE patients who develop SLE.

Main Methods:

• Retrospective analysis of 40 pediatric patients diagnosed with DLE.
• Review of medical records to identify progression to SLE and associated phenotypes.

Main Results:

• 15% of patients had concurrent SLE at DLE diagnosis.
• 26% of the remaining patients progressed to meet SLE criteria.
• 44% developed laboratory abnormalities suggestive of SLE.
• Progression to SLE occurred most frequently within the first year post-DLE diagnosis, with an average age of 11 years.
• Most SLE cases presented with mucocutaneous manifestations and laboratory findings, without significant end-organ damage within 5 years.

Conclusions:

• Pediatric DLE carries a substantial risk of progression to SLE.
• Progression to SLE in pediatric DLE patients may be associated with a milder systemic disease phenotype.
• Close monitoring for SLE development is essential for all pediatric DLE patients, especially during the initial year after diagnosis.