These Illinois guidelines provide information on the medical management and treatment of children with lead poisoning, based on Federal guidelines (revised in 1991) for determining lead poisoning at lower levels. The guidelines outline the effects of lead poisoning, sources of lead, estimated incidence of lead poisoning in Illinois, screening guidelines, risk factors, diagnostic guidelines, medical management, treatment and follow up, and the role of the Illinois Department of Public Health, and community intervention. Appendixes provide procedures for specimen collection, a questionnaire to determine risk, a protocol for identifying children with significant lead burdens, advice to parents for preventing lead poisoning, and a 33-item bibliography. (JDD)