This document provides an overview of poisoning, including its definition, causes, classification, symptoms, diagnosis, and primary management. It discusses how poisoning occurs when substances interfere with normal body functions after being swallowed, inhaled, or absorbed. Poisonings are commonly caused by accidental ingestion in children and the elderly, as well as suicide attempts and drug overdoses. Poisons are classified into categories like plant, food, household chemicals, pharmaceuticals, venom, and other toxins. Symptoms vary depending on the specific poison. Primary management involves identifying the poison, inducing vomiting if swallowed, protecting from further harm, and seeking immediate medical help.