What are the symptoms of lead poisoning?
It's important to note that children may show no obvious symptoms. If a child actually shows symptoms, the level of poisoning is advanced. High blood lead levels are associated with decreased intelligence, mental retardation, and hyperactivity. Symptoms can include hearing problems, behavior problems, and learning problems. Children with high blood lead levels may have poor appetite, stomach aches, vomiting, constipation, crankiness, loss of energy, headaches, and trouble sleeping. Very high levels can cause coma and convulsions.
A person with blood lead levels exceeding 70 micrograms per deciliter is considered severely poisoned, and levels between 100 and 150 can cause death.