Hemorrhage
Hereditary
Acquired
Microangiopathic Hemolytic Anemia (MAHA)
Autoimmune hemolytic anemia
Iron deficiency
Anemia of chronic disease
Thalassemia
Sideroblastic anemia
Marrow failure
Chemicals (e.g. ETOH)
Radiation
Infection (HIV, parvo)
Vitamin B12/folate deficiency
Drugs (chemo)
HIV
Glucose-6-phosphate deficiency
Hemorrhage
Vitamin B9 deficiency
Hereditary
Gamma hydroxybutyrate toxicity
Acquired
Thalassemia
Microangiopathic Hemolytic Anemia 