Final answer:
Lead toxicity is characterized by various symptoms such as developmental delays and lower IQ in children, and memory and abdominal problems in adults. Diagnosis is via blood lead level measurement, and the effects can be particularly harmful during pregnancy.
Step-by-step explanation:
The symptoms that support the diagnosis of lead toxicity include developmental delays, lower IQ, hyperactivity, behavior, and learning problems, slowed growth, hearing problems, and anemia in children. In adults, symptoms may include memory problems, irritability, abdominal pain, headaches, constipation, infertility, and tingling in hands and feet. Serious consequences such as seizures, coma, and death can occur with very high levels of lead exposure. Additionally, diagnosis is typically by measuring the blood lead level, with established upper limits for children and adults. Lead exposure also poses risks during pregnancy as it can cross the placenta, and storing lead in the mother's bones can be released during pregnancy. It is crucial that at-risk pregnant and lactating women be tested for lead exposure.