HH

HFE related HH (C282Y/C282Y, C282Y/H63D)
Non-HFE related HH
Juvenile Hemochromatosis
Hemojuvelin related
Hepcidin related
Transferrin receptor-2 related HH
Ferroportin related HH

Secondary Iron Overload

Iron loading anemia
Thalassemia major
Sideroblasticanemia
Chronic haemolytic anemia
Parenteral iron overload (multiple transfusions)

Others

Metabolic syndrome
Chronic liver disease
Hepatitis C
Alcoholic liver disease
Non-alcoholic steatohepatitis
Porphyria cutanea tarda
African Iron Overload
Very low levels of ceruloplasmin
Very low levels of transferrin
Neonatal iron overload
Table 3: Classification of Iron Overload [6,8].