• Microcytic
  • Iron deficiency
  • Sideroblastic
  • Anaemia of chronic disease
• Normocytic
• Macrocytic
  • Megaloblastic
    • Pernicious anaemia
    • Folate deficiency
  • Non-megaloblastic

• Red cell membrane defects
  • Hereditary spherocytosis
  • Hereditary ellipsocytosis
  • Hereditary stomatocytosis
• Haemoglobin abnormalities
  • Thalassaemias
  • Sickle cell anaemia
• Metabolic disorders of red cell
  • G6PD deficiency
  • Pyruvate kinase deficiency

• Autoimmune haemolytic anaemias
  • Warm autoimmune haemolytic anaemias
  • Cold autoimmune haemolytic anaemias
• Drugs
• Alloimmune haemolytic anaemias
  • Haemolytic disease of the newborn
• Non-immune
  • Paroxysmal nocturnal haemoglobinuria
  • Mechanical ahemolytic anaemia (heart valves, march haemoglobinuria, microangiopathic)

• Polycythaemia
  • Polycythaemia vera
  • Secondary polycythaemias
• Myelofibrosis
• Myelodysplasia

• Splenomegaly

• Vascular disorders
  • Easy bruising syndrome
  • Senile purpura, purpura due to steroids
  • Purpura due to infections
  • Henoch-Schonlein purpura
• Platelet disorders
  • Thrombocytopenia
    • Autoimmune (idiopathic) thrombocytopenic purpura
• Inherited coagulation disorders
  • Haemophilia A
  • Haemophilia B (Christmas disease)
  • von Willebrand's disease
• Acquired coagulation disorders
  • Vitamin K deficiency
  • Liver disease
  • Disseminated intravascular coagulation

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