PEDIATRICS Vol. 47 No. 5 May 1971, pp. 950-951
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ACUTE AND CHRONIC CHILDHOOD LEAD POISONING

Paul F. Wehrle M.D., James N. Yamazaki M.D., Robert L. Brent M.D., J. Julian Chisolm Jr. M.D., John L. Doyle M.D., Emmett L. Fagan M.D., Laurence Finberg M.D., Andre J. Nahmias M.D., G. D. Carlyle Thompson M.D., Lee E. Farr M.D., Robert J. M. Horton M.D., Robert W. Miller M.D., Allan B. Coleman M.D., Joel J. Alpert M.D., Henri J. Breault M.D., Virginia G. Harris M.D., Robert G. Scherz , Robert D. Semsch M.D., and Hugo D. Smith M.D.

Lead poisoning in childhood is a preventable disease. Virtually all cases occur in children who live in old, deteriorated houses which were built and painted years ago when the use of lead-based paints on housing surfaces was widespread. Eighty-five percent of recognized cases occur in children in the 1- to 3-year age range in which pica (the habit of eating non-food substances) is prevalent. Consequently, the disease results from the interaction between hazardous housing and the child with pica. Early diagnosis of plumbism on clinical grounds alone is exceedingly difficult, and often impossible. Furthermore, by the time the clinical diagnosis is obvious, permanent brain damage which cannot be modified by therapy may already have taken place. Although the true incidence of plumbism is not known, careful surveys have revealed that 10 to 25% of young children who live in deteriorated urban slum housing show evidence of increased absorption of lead and that 2 to 5% show evidence of poisoning. While recent therapeutic advances have reduced the mortality of acute lead encephalopathy, it is now apparent that at least one-third of the survivors of encephalopathy sustain permanent irreversible damage to the brain. Significant reduction in the risk of permanent brain damage, therefore, requires identification of the child with increased body lead burden prior to the onset of poisoning. Fundamentally, both the prevention of adverse health effects due to lead and the treatment of identified cases depend upon the elimination of the housing hazard which lies at the root of the problem.