Poisoning
pathological condition caused by exposure, ingestion, injection or inhalation of a toxic substance
Poisoning is the harmful effect which occurs when toxic substances are introduced into the body. The term "poisoning" is a derivative of poison, a term describing any chemical substance that may harm or kill a living organism upon ingestion. Poisoning can be brought on by swallowing, inhaling, injecting or absorbing toxins through the skin. Toxicology is the practice and study of symptoms, mechanisms, diagnoses, and treatments correlated to poisoning.
Levels of exposure
When a poison is introduced to a living organism, the symptoms that follow successful contact develop in close relation to the degree of exposure.
Acute exposure
Acute toxicity or poisoning consists of a living organism being harmfully exposed to poison once or more times during a brief period, with symptoms manifesting within 14 days since administration.
Chronic exposure
Chronic toxicity or poisoning involves a living organism being exposed to a toxin on multiple instances over an extended period of time, whereas the symptoms either develop gradually or after a protracted latent period. Chronic poisoning most commonly occurs following exposure to poisons that bioaccumulate, or are biomagnified, such as mercury, gadolinium, and lead.
Methods
Accidental poisonings
In 2020, America's Poison Centers' NPDS (National Poison Data System) report determined that 76.9% of recorded toxin exposures were accidental, with the rest of the statistics either being deliberate or unexpected. A large portion of these accidental incidents occurred due to mistakenly taking the incorrect medicine, or doubling one's dose by mistake.
Begin with the source’s own compact description: “Poisoning” is pathological condition caused by exposure, ingestion, injection or inhalation of a toxic substance. The dossier treats that line as a proposition to test through Poisoning, pathological and condition, not as a finished interpretation.
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The phrase “pathological condition caused by exposure, ingestion, injection or inhalation of a toxic substance” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 20, 2026. The linked authority identifier is Q18621601. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2020.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Poisoning” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.