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Updated: Jul 25, 2026

Granulocyte-dependent Autoantibody-induced Skin Blistering
Published on: October 12, 2012
[Erythema nodosum: etiological changes in the last two decades]
I Sota Busselo1, E Oñate Vergara, E G Pérez-Yarza
1Servicio de Pediatría, Hospital Donostia, San Sebastián, Guipúzcoa, Spain. isota@chdo.osakidetza.net
Erythema nodosum in children was historically linked to tuberculosis but is now primarily caused by gastrointestinal infections. Stool cultures are crucial for diagnosing the cause, especially with accompanying digestive symptoms.
Area of Science:
- Pediatric Dermatology
- Infectious Diseases
- Epidemiology
Context:
- Erythema nodosum is a panniculitis often associated with underlying conditions.
- Understanding evolving etiological trends is vital for accurate diagnosis and management.
- This study examines pediatric erythema nodosum cases over an 18-year period.
Purpose:
- To identify the changing etiological factors of erythema nodosum in hospitalized children.
- To analyze the association between specific infections and erythema nodosum.
- To guide diagnostic approaches based on current trends.
Summary:
- A retrospective study analyzed 45 children with erythema nodosum.
- Tuberculosis was the leading cause until 1991; thereafter, gastrointestinal pathogens became most frequent.
- Common gastrointestinal culprits included Salmonella, Campylobacter, and Yersinia species.
Impact:
- Highlights a significant shift in erythema nodosum etiology from tuberculosis to gastrointestinal infections in children.
- Emphasizes the diagnostic importance of stool cultures, particularly in cases with gastrointestinal symptoms.
- Informs clinical practice regarding the investigation of pediatric erythema nodosum.
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