Recognizing poisoning symptoms is essential to taking timely action and preventing potential health complications.
A poisoning event occurs when a person is exposed to a harmful substance that may have been ingested, injected, inhaled, or touched, among other routes of exposure. Most poisonings happen accidentally, and medical assistance should be sought immediately.
Types of Poisoning
Poisoning can be caused by various agents, including food, alcohol, and carbon monoxide, among others. Generally speaking, poisoning can be classified into three main types:
- Exogenous poisoning: Occurs when an individual is exposed to a toxic substance from an external source that poses a health risk. Drug or medication overdoses fall under this category.
- Endogenous poisoning: Caused by the accumulation of toxic substances produced naturally by the body—such as urea—which should normally be eliminated through proper bodily functions.
- Food poisoning: Stems from ingesting food that has spoiled or is contaminated with microorganisms such as bacteria, viruses, or fungi, or other toxic substances.
Depending on the underlying cause, poisoning symptoms can vary. They may be acute (appearing immediately after a single exposure to a toxic substance) or chronic (developing gradually over time after repeated exposures).
Symptoms of Poisoning
Because there are many different agents that cause toxicity, signs and symptoms can vary widely and may include:
- An increase or decrease in blood pressure.
- Unusually rapid or slow heart rate.
- Dilated or constricted pupils.
- Seizures or convulsions.
- Profuse sweating.
- Skin redness, rash, or lesions.
- Visual disturbances, such as dimming, double vision, or blurred vision.
- Shortness of breath.
- Vomiting or diarrhea.
- Abdominal pain.
- Drowsiness or lethargy.
- Hallucinations or delirium.
- Urinary or fecal retention or incontinence.
- Slowed or impaired movement.
- Hives or allergic skin reactions.
How Poisoning Is Treated
A healthcare professional must first identify the type and cause of poisoning to determine the appropriate course of treatment based on the specific toxin involved.
Medical management typically involves minimizing further exposure to the toxic substance or administering specific antidotes—for example, in cases of medication overdose or lead poisoning.
Depending on the toxic agent, severity can range from mild to life-threatening. For instance, in some cases of food poisoning, a person might only experience mild skin flushing, while in more severe cases, they may lose consciousness.
Therefore, whenever poisoning occurs, it is critical to seek immediate medical attention—especially if the source is unknown.
Key First-Aid Steps to Keep in Mind:
- Move the person away from the source of the toxic agent or stop consuming the suspect food immediately.
- If the person loses consciousness, place them on their side in a recovery position.
- Do not give the person liquids or try to induce vomiting, as this can worsen their condition.
- While individuals with known food allergies or sensitivities might already know what medication to take, it is always recommended to consult a doctor to confirm the safest course of action.
At the Emergency Room and Internal Medicine Department of Centro Médico ABC, we provide specialized medical care. Contact us today!
Fuentes:
Secretaría de Salud, MedlinePlus, MSD Manuals
