Intrinsic Defects - 1
Paroxysmal Nocturnal Hemoglobinuria (PNH)
MEMBRANE DEFECTS
     H. spherocytosis
     H. elliptocytosis
     H. stomatocytosis
     Rhnull phenotype
ENZYME DEFECTS
     G6PD
     Pyruvate kinase
    
ACQUIRED
CONGENITAL