Haemolytic anemia, unusual cause but not rare

Anemia is the decrease in erythrocyte mass, hematocrit, or blood hemoglobin concentration below two standard deviations for age, sex and race. The etiology of anemia varies according to age and can be classified into three groups: blood loss, destruction of red blood cells (hemolytic anemia) and failure to produce. The most frequent cause of hemolysis due to a structural membrane problem is spherocytosis and the most frequent cause of enzyme deficiency is glucose-6 phosphate dehydrogenase deficiency followed by the pyruvate kinase deficiency.