Paroxysmal cold haemoglobinuria in children: 3 cases encountered within a period of 7 months

3 children who fulfilled the criteria for the diagnosis of paroxysmal cold haemoglobinuria of the classical Donath-Landsteiner type are described. The benign clinical course of this illness is confirmed. A serological study of two of the Donath-Landsteiner antibodies revealed the anti-P specificity in one, but not in another serum.