The effects of organophosphate and carbamate poisoning are rapid. Early symptoms are usually a headache, feeling of weakness, blurred vision, excessive perspiration, and nausea. Abdominal cramps, vomiting, and excessive salivation may set in with, or without, diarrhea. The throat and chest will feel constricted making breathing difficult. In mild poisoning, some of these symptoms may be absent.
Heat stress causes symptoms similar to pesticide poisoning.
If breathing stops, artificial respiration is the most important first-aid. While waiting for medical help, give first-aid as indicated on the label. Never try to give anything by mouth to an unconscious person. Get the victim to a doctor as soon as possible. If you know which pesticide is involved, take the container along so the doctor can read the label.