A 34-year-old lady presenting with features of cold agglutinin disease during the course of systemic lupus erythematosus is described. Cold antibody titer was very high (1 in 4096) with specificity for 'I' antigen. Even though she had poor prognostic factors like high titer of cold antibodies with low thermal amplitude, she responded well to prednisolone.
Adult ; Anemia, Hemolytic, Autoimmune/immunology ; Anemia, Hemolytic, Autoimmune/etiology* ; Anemia, Hemolytic, Autoimmune/drug therapy ; Antibodies/analysis ; Case Report ; Female ; Human ; Lupus Erythematosus, Systemic/complications* ; Prednisolone/therapeutic use ; Prognosis