What is one of the common signs of lead poisoning?

Unexplained irritability or lethargy in children is a common sign of lead poisoning. Lead exposure can significantly affect a child's mood and behavior, leading to increased irritability, behavioral problems, difficulty concentrating, and overall lethargy. These symptoms can manifest because lead interferes with neurotransmitter function and brain development, making it crucial to recognize them as potential indicators of lead exposure. Early identification and intervention are critical in managing lead poisoning, and behavioral changes are often among the first signs that parents or caregivers may notice.

In contrast, while persistent cough, difficulty breathing, and frequent headaches can be associated with various health issues, they are not typically considered direct or common indicators of lead poisoning specifically. Lead's primary effects, particularly in children, revolve around cognitive and behavioral changes rather than respiratory symptoms or general pain complaints like headaches.