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[Immunoglobulin A vasculitis (IgAV)].

Katharina Rose1, Jan-Eric Turner2, Christof Iking-Konert3

  • 1Abteilung für Rheumatologie, Stadtspital Zürich, Birmensdorferstr. 497, 8063, Zürich, Schweiz. Katharina.Rose@stadtspital.ch.

Zeitschrift Fur Rheumatologie
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PubMed
Summary

IgA vasculitis (IgAV) is a common childhood vasculitis affecting skin, joints, kidneys, and gut. While often self-limiting in children, adults may experience more severe disease and complications.

Keywords:
Henoch-Schönlein purpuraIgAV-associated nephritisManagementPalpable purpuraSmall vessel vasculitis

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Area of Science:

  • Immunology
  • Rheumatology
  • Pediatrics

Context:

  • IgA vasculitis (IgAV) is an immune complex-mediated small vessel vasculitis.
  • It is the most prevalent systemic vasculitis in childhood.
  • Adults are less frequently affected but often present with more severe disease and renal involvement.

Purpose:

  • To provide a comprehensive overview of IgA vasculitis (IgAV).
  • To discuss its characteristics, triggers, diagnosis, and management.
  • To highlight differences in disease course between children and adults.

Summary:

  • IgAV is characterized by IgA1-dominant immune deposits in small vessels, typically manifesting as palpable purpura on the skin, and affecting joints, kidneys, and the gastrointestinal tract.
  • Triggers include infections and drugs; diagnosis may require differential work-up for atypical presentations.
  • Management is tailored to organ involvement, with supportive care for children and specific guidelines for renal/GI issues in adults, though treatment evidence for glucocorticoids and immunosuppressants is often insufficient.

Impact:

  • Informs clinical practice for diagnosing and managing IgA vasculitis.
  • Highlights the need for tailored treatment strategies based on age and organ involvement.
  • Emphasizes the current limitations in evidence for specific therapeutic interventions.