Acute toxicity symptom question: which of the following can be a symptom of acute toxicity?

Study for the Ontario Pesticide Training and Certification CORE Test. Prepare with multiple-choice questions, get hints and explanations. Ensure readiness for your certification!

Acute toxicity refers to harmful effects that show up quickly after a single or short-term high-dose exposure. A headache is a common systemic response to that kind of exposure, arising from the nervous system reacting to a toxin and often occurring soon after contact with pesticides or other toxicants.

Reduced body weight tends to develop over longer periods with repeated exposure or inadequate nutrition, so it isn’t typically an immediate sign of a single acute exposure. Tremors can happen with some neurotoxic pesticides, but they depend on the specific chemical and dose and aren’t as universally observed as headaches. Skin irritation is a local effect at the site of contact and may occur with dermal exposure, but it doesn’t necessarily indicate systemic acute toxicity.

So, headache best fits the idea of an acute toxicity symptom.