New York, NY personal injury attorney Robert Vilensky talks about the signs of lead paint poisoning in children. The most prevalent sign of lead poisoning in children is hyperactivity. Affected children often display fidgety behavior, struggle to sit still, and frequently run around. They may have difficulty maintaining concentration and find it challenging to remain in front of a television for an extended period. Typically, these children can stay still for only about a minute before needing to get up and engage in other activities. Hyperactivity is regarded as the primary symptom of lead poisoning in children.