Which of the following is NOT a symptom of lead poisoning?

Convulsions are indeed a serious symptom associated with lead poisoning, typically indicating a severe level of exposure. In contrast, the other symptoms listed—delayed development, hyperactivity, and confusion—are more commonly reported in cases of lead poisoning, especially in children.

Delayed development can manifest as challenges in meeting developmental milestones, affecting cognitive and physical growth due to the detrimental effects of lead on the nervous system. Hyperactivity is another behavioral symptom that has been linked to lead exposure, where affected children may display increased levels of energy or an inability to focus. Confusion is also a recognized cognitive symptom of lead poisoning, often resulting from the impact of lead on brain function.

Understanding these symptoms is crucial for early detection and intervention in cases of lead exposure, highlighting the importance of assessing the levels of lead in environments to protect vulnerable populations, particularly children.