Pica is most commonly seen in pregnant women,[6] small children, and people who may have developmental disabilities such as autism and more.[7] Children eating painted plaster containing lead may suffer brain damage from lead poisoning. A similar risk exists from eating soil near roads that existed before the phase-out of tetraethyllead or that were sprayed with oil (to settle dust) contaminated by toxic PCBs or dioxin. In addition to poisoning, a much greater risk exists of gastrointestinal obstruction or tearing in the stomach.