What are common symptoms of lead poisoning?

The symptoms of lead poisoning can vary depending on the level of exposure and the age of the individual affected. Behavioral problems, including hyperactivity, are especially prominent in children who are most at risk for lead poisoning. Lead exposure can also lead to neurological issues, which manifest as learning difficulties, decreased IQ, and other cognitive impairments. An upset stomach is a common gastrointestinal symptom seen in cases of lead poisoning.

The choice reflecting upset stomach, behavioral problems, and hyperactivity accurately represents the effects lead exposure can have, especially in children. In contrast, headaches, nausea, and insomnia are more general and can be associated with many other conditions, not specifically with lead poisoning. Rashes, joint pain, and fatigue do not directly correlate with the more common and specific indications of lead exposure. Lastly, symptoms like weight gain, hair loss, and dizziness are not typical indicators of lead poisoning, emphasizing the relevance of the chosen correct answer.