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 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 drive in an effort to modernise the country’s economy and make it less dependent on foreign imports, while encouraging foreign direct investment. The South Gyeongsang Province was one of the areas identified for industrial development along with the independently administered coastal corridor between Ulsan and