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Warm Autoimmune Hemolytic Anemia

IgG-Mediated Erythrocyte Destruction at Body Temperature

Written by: Saygı Hospital Health Guide Editorial Board
Published:

This content is for general information; please consult your physician for diagnosis and treatment.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Hematoloji department. Book Appointment →

What is Warm Autoimmune Hemolytic Anemia?

An acquired autoimmune disorder in which warm-reactive IgG antibodies coat erythrocytes leading to extravascular hemolysis

Direct antiglobulin (Coombs) test is positive for IgG with or without complement

May be primary (idiopathic) or secondary to lymphoproliferative, autoimmune, infectious, or drug-related causes

Hemolysis occurs predominantly in the spleen by macrophage phagocytosis of opsonized red cells

Severity varies from compensated to life-threatening with hemoglobin below 7 g/dL

Symptoms

Progressive fatigue, weakness, and exertional dyspnea from anemia
Pallor, jaundice with scleral icterus, and dark urine from indirect hyperbilirubinemia
Splenomegaly and tenderness in the left upper quadrant
Tachycardia, palpitations, and orthostatic dizziness in moderate to severe disease
Constitutional symptoms suggesting underlying lymphoma or autoimmune disorder

Risk Factors

Chronic lymphocytic leukemia, non-Hodgkin lymphoma, and other lymphoproliferative disorders
Systemic lupus erythematosus, common variable immunodeficiency, and other autoimmune diseases
Recent viral infections including hepatitis, HIV, and Epstein-Barr virus
Drugs such as cephalosporins, methyldopa, fludarabine, and checkpoint inhibitors
Pregnancy or postpartum period in selected cases

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • New normocytic or macrocytic anemia with reticulocytosis and elevated bilirubin
  • Jaundice, dark urine, or splenomegaly with anemia
  • Severe symptoms such as syncope, chest pain, or hemodynamic instability
  • Anemia in patients with known autoimmune disease, lymphoma, or recent infection
  • Failure of empirical iron or vitamin replacement to correct anemia

Treatment Methods

01
Corticosteroids at 1 mg/kg per day are first-line therapy with gradual taper
02
Rituximab as second-line or first-line in selected secondary cases
03
Splenectomy considered for steroid-refractory or relapsing primary disease
04
Cytotoxic agents, mycophenolate, or daratumumab for refractory disease
05
Folate supplementation, transfusion of best-match units, and treatment of underlying cause

Which Department to Visit?

You can visit our Hematoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Let us help you

You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.