H-Hemoglobinopathy: Hb SS, SC, S beta Thal Hemoglobinuria: Paroxysmal Nocturnal Hemoglobinuria.
E-Enzyme Deficiency-Inherited Pyruvate Kinase (PK) deficiency and pyrimidine-5'-nucleotidase deficiency
M-Medication-Drug induced immune hemolytic anemias
A-Antibodies, autoimmune
T-Trauma to the red cells. Fragmentation (Microangiopathic)
O-Ovalocytosis-This is an autosomal dominant disorder seen in people from South East Asia. Signs and symptoms are minimal.
L-Liver disease .
O-Osmotic fragility in Hereditary spherocytosis and in Hereditary Eliptocytosis
G-Glucose-6-Phosphate Dehydrogenase Deficiency (G6PD)
I-Infection: Intra-erythrocytic parasites (malaria and babesiosis)
S-Splenic destruction in hyperslenism. Splenomegaly,
T-Transfusion related-Thalassemias