Autoimmune hemolytic anemia classification

	Autoimmune hemolytic anemia Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Assosciate Editor(s)-In-Chief: Prashanth Saddala M.B.B.S; Shyam Patel [2]

Overview


Category	Features	Subtypes

Warm-antibody type	Accounts for ~75% of cases of autoimmune hemolytic anemia Due to IgG autoantibody Binding occurs optimally at 37 degrees Celsius Extravascular hemolysis (reticuloendothelial system)	Idiopathic Systemic lupus erythematosus Evans' syndrome Chronic lymphocytic leukemia Non-Hodgkin lymphoma Drugs (methyldopa)
Cold-antibody type	Accounts for ~25% of cases of autoimmune hemolytic anemia Due to IgM autoantibody Binding occurs optimally at 4 degrees Celsius Intravascular hemolysis Recognition by the reticuloendothelial system Destruction by macrophages	Cold agglutinin disease Paroxysmal cold hemoglobinuria Mycoplasma infection Malignancy
Mixed warm-antibody and cold-antibody type	Due to IgM subtype Mixed features	Various clinical entities Generally rare