Nicotine intoxication

Nicotine intoxication occurs when a person is exposed to a harmful amount of nicotine, a chemical found in tobacco products and some smoking alternatives. This condition primarily affects the nervous system and the cardiovascular system, causing symptoms like dizziness, nausea, and rapid heartbeat. Nicotine acts on the brain and nerves, leading to overstimulation that can result in confusion, headache, and sometimes seizures. It can also cause gastrointestinal upset such as vomiting and abdominal pain. Severe cases may lead to breathing difficulties and dangerously low blood pressure. The effects depend on the amount of nicotine absorbed and the route of exposure, such as ingestion, inhalation, or skin contact.

Nicotine intoxication is a toxic condition caused by excessive exposure to nicotine, a potent nicotinic acetylcholine receptor agonist. It commonly results from ingestion of tobacco products, nicotine replacement therapies, or accidental exposure to nicotine-containing substances. The core pathology involves overstimulation of autonomic ganglia and the central nervous system, leading to a biphasic clinical presentation with initial sympathetic activation (tachycardia, hypertension, diaphoresis) followed by parasympathetic predominance (bradycardia, hypotension, respiratory depression). Major clinical significance includes the risk of seizures, respiratory failure, and cardiovascular collapse. Diagnosis is critical to differentiate from other causes of altered mental status and autonomic instability. The severity correlates with the dose and route of nicotine exposure.