Overview of food poisoning

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Food poisoning results from eating a plant or animal that contains a toxin.

The poisoning occurs after ingesting poisonous species of mushrooms or plants or contaminated fish or shellfish.
The most common symptoms are diarrhea, nausea, and vomiting and sometimes seizures and paralysis.
The diagnosis is based on symptoms and examination of the ingested substance.
Avoiding wild or unfamiliar mushrooms and plants and contaminated fish reduces the risk of poisoning.
Replacing fluids and ridding the stomach of the toxic substance are the best forms of treatment, but some substances are deadly.

(See also Overview of Poisoning.)
Many disorders cause sudden vomiting and diarrhea due to inflammation of the digestive tract (gastroenteritis). Sometimes people loosely refer to all of these disorders as