Ciguatera fish poisoning Ciguatera fish poisoning Ciguatera fish poisoning, also known simply as ciguatera, is a foodborne illness caused by eating reef fish whose flesh is contaminated with certain toxins. Symptoms may include diarrhea, vomiting, numbness, itchiness, sensitivity to hot and cold, dizziness, and weakness. The onset of symptoms varies with the amount of toxin eaten from half an hour to up to two days. The diarrhea may last for up to four days. Some symptoms typically remain for a few weeks to months. Heart difficulties such as slow heart rate and low blood pressure may also occur. The specific toxins involved are
Onsan illness it did admit to high pollution in the area. As a result, from 1991 between 30,000 and 40,000 residents were re-housed away from the affected area as part of a "Collective Emigration Plan". It is thought that over time some of those may have returned. Onsan illness Onsan Illness () is the name for a pollution disease in Korea that occurred in Onsan-eup, Ulju-gun, Ulsan, Korea. It caused a variety of symptoms in the general public and gave rise to an environmental movement in the mid-1980s. In the 1970s South Korea’s dictator Park Chung Hee pushed for a heavy-chemical industry