Which of the following is NOT a symptom of chronic toxicity?

The correct answer indicates that headache is not typically classified as a symptom of chronic toxicity. Chronic toxicity refers to long-term exposure to a chemical or substance, which often leads to gradual and persistent negative effects on health.

Symptoms of chronic toxicity are generally more related to long-term biological changes in the body, such as nerve damage, which denotes significant alterations in nervous system function caused by prolonged exposure to toxic substances. Skin irritation and reduced body weight also align with chronic toxicity, as these issues can develop over time with consistent exposure, indicating a sustained adverse reaction to the chemical in question.

Headaches, while they can be caused by various factors, are often more associated with acute exposure scenarios or situational stresses rather than chronic conditions. Therefore, headaches do not typically fit within the category of symptoms that specifically define chronic toxicity.