[Natural toxin poisoning].

Natural toxin poisoning often occurs when amateur who has no expert knowledge of food collects and cooks the wrong material. In many cases, the symptoms of natural toxin poisoning are mild and the patients recover from illness within a day. However, if the patients have respiratory or neurological symptoms after several hours of intake, the patients must go to hospital immediately. Mushroom poisoning is often reported and puffer fish poisoning is sometimes reported in Japan.