Henna causes life threatening haemolysis in glucose-6-phosphate dehydrogenase deficiency

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Haemolytic crisis in glucose-6-phosphate dehydrogenase deficient individuals following topical application of henna occurred in four children: a female neonate (haemoglobin 50 g/l, serum bilirubin 700 micromol/l), who recovered after exchange transfusion; a male infant (haemoglobin 28 g/l) who died despite transfusion; and two preschool children (haemoglobin 40 and 41 g/l respectively).