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Allergy & Immunology60 papers

Post-infectious cold agglutinin disease

Last edited: 4/15/2026

Overview

Post-infectious cold agglutinin disease (CAD) arises following an infection, characterized by the inappropriate production of cold-reacting autoantibodies that target red blood cells, leading to hemolysis and anemia 12.

Diagnosis

  • Clinical Presentation: Recurrent hemolytic anemia, fatigue, pallor, and jaundice 12.
  • Laboratory Tests: Positive direct antiglobulin test (DAT), elevated cold agglutinin titers (typically >1:640 at 4°C), and evidence of hemolysis (elevated LDH, indirect bilirubin) 12.
  • Cold Agglutinin Titers: Serial measurements to confirm persistence 12.
  • Management

  • First-Line Treatments: Corticosteroids (e.g., prednisone) to reduce autoantibody production 12.
  • Adjunctive Therapies: Intravenous immunoglobulin (IVIG) for acute hemolysis or refractory cases 12.
  • Rarely Considered: Splenectomy in severe, refractory cases 12.
  • Special Populations

  • Pregnancy: Limited data; close monitoring and supportive care with corticosteroids are typically recommended 12.
  • Pediatrics: Similar management principles apply, with careful monitoring due to potential for rapid hemolysis 12.
  • Elderly: Increased vigilance for complications; individualized treatment plans considering comorbidities 12.
  • Comorbidities: Management tailored to underlying conditions; careful monitoring of drug interactions and side effects 12.
  • Key Recommendations

  • Initiate corticosteroid therapy for symptom control and reduction of autoantibody levels (Evidence: Moderate) 12.
  • Consider IVIG for acute exacerbations or when corticosteroids are insufficient (Evidence: Moderate) 12.
  • Evaluate splenectomy as a last resort in patients with severe, refractory disease (Evidence: Expert opinion) 12.
  • References

    1 Singh SS, Rao SL. A monomeric protein with hemagglutinating activity from seeds of Vigna mungo (Phaseolus mungo). Indian journal of biochemistry & biophysics 1991. link 2 Chowdhury S, Ahmed H, Chatterjee BP. Chemical modification studies of Artocarpus lakoocha lectin artocarpin. Biochimie 1991. link90024-u)

    Original source

    1. [1]
      A monomeric protein with hemagglutinating activity from seeds of Vigna mungo (Phaseolus mungo).Singh SS, Rao SL Indian journal of biochemistry & biophysics (1991)
    2. [2]
      Chemical modification studies of Artocarpus lakoocha lectin artocarpin.Chowdhury S, Ahmed H, Chatterjee BP Biochimie (1991)

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