The symptoms of lead poisoning are numerous and affect many different body systems. Chronic exposure to even low levels of lead is detrimental to mental development in children, and has been correlated with decreased IQ and behavioral problems.

Other symptoms of lead piosoning may include hyperirritability, aggressive behavior, decreased appetite and energy, poor sleeping, headaches, constipation, and loss of recently acquired developmental skills (in young children). Anemia and abdominal cramping are also common.

Very high levels may cause acute encephalopathy with vomiting, staggering gait, muscle weakness, seizures, or coma.

Laboratory tests may include:

• serum lead levels
• erythrocyte protoporphyrin
• iron level
• complete blood count and coagulation studies
• bone marrow biopsy (stippled erythroblasts)
• X-ray of the long bones and abdomen