Royal Army College

Lesson Overview

A casualty is not always hurt by force or taken ill from within; sometimes the harm comes from something that has bitten, stung, or poisoned them, an animal or insect, a venomous creature, or a harmful substance swallowed, breathed, or absorbed. These are common enough in field and relief work, they range from the trivial to the deadly, and a first-aider must know how to deal with them. The earlier lessons taught the care of injury and sudden illness; this lesson teaches the first-aider's response to bites, stings, and poisoning, the harm done by a bite or sting or by a poison entering the body, within the first-aider's scope. It matters because these harms are common, because a few of them, the severe allergic reaction to a sting, the dangerous bite, the serious poisoning, can be life-threatening, and because the first-aider's right response, recognising the danger, giving the basic care, and summoning, can be the difference between a minor matter and a fatal one. As throughout this course, the first-aider works within their scope: they give the basic first aid for a bite, sting, or poisoning, recognise the dangerous reaction, and summon urgently when the harm is serious, while the medical treatment belongs to qualified staff. This lesson teaches it: why bites, stings, and poisoning matter and the danger of the severe reaction, the basic first aid for bites and stings, and the first aid for poisoning.

The lesson takes bites, stings, and poisoning in three parts. First, why they matter and the danger of the severe reaction: that these harms are common and range from trivial to deadly, and that the gravest danger from a bite or sting is often the severe allergic reaction, which can kill quickly and which the first-aider must recognise. Second, the basic first aid for bites and stings: the care of an animal or insect bite or a sting, cleaning and caring for the wound, easing the effect, and watching for the dangerous reaction or the dangerous bite. Third, the first aid for poisoning: the response to a poison swallowed, breathed, or absorbed, the basic care within scope, and the urgent summoning that serious poisoning demands. Throughout, the lesson holds that bites, stings, and poisoning are common harms ranging from trivial to deadly, that the severe allergic reaction is often the gravest and swiftest danger, and that the first-aider gives basic care, recognises the serious, and summons within scope.

By the end you will be able to explain why bites, stings, and poisoning matter and recognise the danger of the severe allergic reaction; give the basic first aid for an animal or insect bite or a sting, and recognise the dangerous bite or reaction; give the first aid for poisoning swallowed, breathed, or absorbed, within scope; summon urgently when the harm is serious; and explain the first-aider's scope and limits, with medical treatment belonging to qualified staff.

Key Terms

Bite: harm done by the teeth or jaws of an animal or person, which may injure, become infected, or, with a venomous creature, introduce venom.
Sting: harm done by a stinging creature (insect or other), usually minor but capable of causing a severe allergic reaction in some people.
Poisoning: harm done by a poison, a harmful substance, entering the body by being swallowed, breathed in, or absorbed through the skin.
Venom: the poison some creatures inject by bite or sting, which can range from a minor local effect to a dangerous one needing medical care.
Severe allergic reaction (anaphylaxis): a rapid, life-threatening reaction some people have to a sting, bite, or other trigger, which can close the airway and cause collapse, and which is a medical emergency demanding the most urgent care.
The local and the serious: the distinction between a bite or sting with only a minor local effect and one that causes a serious reaction or introduces a dangerous venom or infection.
Wound care for a bite: the cleaning and care of a bite wound, which is prone to infection, within the first-aider's scope.
The route of a poison: how a poison entered the body, swallowed, breathed in, or absorbed, which shapes the first aid and the danger.
Recognise, care, summon: the first-aider's drill for bites, stings, and poisoning, giving basic care, recognising the serious, and summoning when the harm is dangerous.
The clinical limit: the boundary beyond which the treatment of serious bites, reactions, and poisoning belongs to qualified medical staff, the first-aider giving basic care and summoning.

Why bites, stings, and poisoning matter, and the severe reaction

The lesson begins by placing these harms. A casualty may be harmed not by force or illness but by something that has bitten, stung, or poisoned them: bitten by an animal or, rarely, a person, stung by an insect or other creature, envenomed by a venomous animal, or poisoned by a harmful substance that has entered the body. These harms are common enough in the field and in relief work, where soldiers and the people they help meet animals, insects, and harmful substances, and the first-aider should know how to deal with them. They range very widely in seriousness: most bites and stings are minor, a painful but trivial matter, while a few are serious or even deadly, and the first-aider's task is in large part to tell the trivial from the serious and to respond rightly to each. So bites, stings, and poisoning are a real part of the first-aider's work, common, mostly minor but sometimes deadly, and worth knowing how to handle.

The gravest and swiftest danger from a bite or sting is often not the bite or sting itself but the severe allergic reaction it can trigger, and the first-aider must understand this from the outset. Some people react to a sting or bite (or to other triggers) with a severe allergic reaction, anaphylaxis, a rapid and life-threatening reaction that can swell and close the airway, cause difficulty breathing, and bring collapse, and that can kill within minutes. This is a true medical emergency, and it is often more dangerous than the sting that triggered it: a sting that would be trivial to most people can, in a person who reacts severely, be rapidly fatal. So the first-aider learns to recognise the severe allergic reaction, the rapid onset after a sting or bite of swelling (especially of the face, mouth, or throat), difficulty breathing, a rash, and collapse, and to treat it as the grave and urgent emergency it is. The recognition matters enormously, because the severe allergic reaction is a medical emergency demanding immediate support of life, the airway and breathing above all, and the most urgent summoning, exactly as the medical-emergencies lesson taught, and a first-aider who recognises it and acts at once can save a life that a first-aider who treated it as a minor sting would lose. Where a casualty is known to react severely and carries their own emergency medication for it, the first-aider helps them use it within their scope and as trained. So the first-aider holds, from the start, that the severe allergic reaction is often the gravest danger from a bite or sting, that it is a rapid, life-threatening medical emergency, and that recognising it and acting urgently is the most important thing in this lesson. The basic care of bites, stings, and poisoning, which the rest of the lesson teaches, is always given with this watch for the severe reaction running alongside.

   WHY BITES, STINGS, POISONING MATTER + THE SEVERE REACTION

   harm from something that BIT, STUNG, or POISONED the casualty (animal/
   insect bite, sting, venom, a harmful substance swallowed/breathed/absorbed).
   common in field + relief work; range from TRIVIAL to DEADLY -> the
   first-aider's task is largely to tell the trivial from the serious.

   THE GRAVEST, SWIFTEST DANGER is often NOT the bite/sting itself but the
   SEVERE ALLERGIC REACTION (ANAPHYLAXIS) it can trigger:
     a rapid, life-threatening reaction -> swells + closes the AIRWAY,
     difficulty breathing, rash, COLLAPSE -- can KILL in minutes
     a sting trivial to most can be rapidly FATAL to one who reacts severely
   RECOGNISE it: rapid onset after a sting/bite of facial/throat SWELLING,
   breathing difficulty, rash, collapse.
   -> a MEDICAL EMERGENCY: support life (airway + breathing), summon most
      urgently; help the casualty use their own emergency medication if they
      carry it (within scope).

   the basic care below always runs alongside this WATCH for the severe reaction.

The basic first aid for bites and stings

With the watch for the severe reaction running alongside, the first-aider gives the basic first aid for the bite or sting itself, which for most bites and stings is straightforward. For a sting, the basic care is to ease the effect: removing the sting if one is left and it can be done safely, easing the pain and swelling, and watching the casualty, especially in the period after the sting, for any sign of the severe allergic reaction. Most stings are minor and need only this simple care and reassurance, but the first-aider keeps watching for the severe reaction, which can develop rapidly after a sting that seemed trivial. Multiple stings, or stings in a dangerous place such as the mouth or throat (which can swell and threaten the airway), are more serious and watched and summoned for accordingly.

For a bite, the basic care attends to the wound and its dangers. A bite wound, from an animal or a person, is prone to infection, more so than many wounds, because the mouth carries much that can infect, so the first-aider cleans and cares for the bite wound as best they can within scope, controlling any bleeding (by the bleeding-control care the course taught), cleaning the wound, and covering it, and recognises that a bite often needs medical attention for the infection risk even when the wound itself is not severe. Beyond the ordinary bite, the first-aider recognises the dangerous bite: a bite from a venomous creature, which may introduce venom needing medical care; a serious bite that has done real injury (a large animal's bite can cause severe wounds and bleeding, treated as the injury it is by the course's wound and bleeding care); and a bite that risks serious infection or disease. For a bite that may have introduced venom, the first-aider gives the basic care, keeps the casualty calm and still (movement can spread venom), does not attempt unproven or harmful folk remedies, and summons urgently, because the treatment of envenoming belongs to medical staff and time may matter. Across bites and stings, the first-aider's part is the same shape: give the basic care for the wound or sting, ease the effect, watch for the severe allergic reaction above all, recognise the dangerous bite or sting, and summon when the harm is serious, while the medical treatment of serious bites, venom, and reactions belongs to qualified staff. Most bites and stings are dealt with by simple care and a watchful eye; the few that are serious, the severe reaction, the dangerous bite, the venomous sting, are recognised and summoned for urgently. This is the first-aider's care of bites and stings within scope: simple care for the common, sharp recognition and urgent summoning for the dangerous, and always the watch for the severe reaction that is the gravest danger.

The first aid for poisoning

The third part of the lesson is the first aid for poisoning: harm done by a poison, a harmful substance, entering the body. A poison can enter the body in different ways, and the route matters: it may be swallowed (a harmful substance eaten or drunk), breathed in (a harmful gas, smoke, or fumes), or absorbed through the skin (a harmful substance in contact with the skin). The first-aider may meet poisoning in the field or in relief work, from harmful substances, fumes, contaminated food or water, or other sources, and poisoning ranges, like bites and stings, from the minor to the deadly, with serious poisoning a grave emergency. So the first-aider learns the basic first aid for poisoning, within their scope.

The first principle, as always, is the safety of the scene and the first-aider, which matters especially with poisoning: where a poison is in the air (fumes, gas, smoke) or on surfaces, the first-aider must not become a casualty themselves, so they ensure their own safety, get the casualty away from the source of the poison if it is safe to do so, and do not enter a dangerous atmosphere unprotected, because a first-aider overcome by the same fumes helps no one. With the scene safe and the casualty away from the source, the first-aider manages the casualty by the systematic approach, supporting life, the airway, breathing, and circulation, as the medical-emergencies lesson taught, because serious poisoning can threaten life and is supported the same way whatever the poison. The first-aider tries to learn what the poison was, how much, and when, from the casualty, bystanders, or the surroundings (a container, a smell), which helps the medical staff who will treat the casualty, and they keep any container or sample that would help identify the poison. Crucially, the first-aider does not give unproven or harmful first-aid treatments for poisoning: they do not make the casualty vomit, give substances to counter the poison, or attempt treatments they are not trained for, because the wrong action can do more harm, and the treatment of poisoning belongs to qualified medical staff, often with the advice of poison specialists. The first-aider's part is to make the scene safe, get the casualty from the source, support life by the systematic approach, gather what they can about the poison, and summon urgently, because serious poisoning needs the medical care and the specialist knowledge the first-aider cannot supply. So the first aid for poisoning is the safe approach (above all not becoming a casualty oneself), supporting the casualty's life within scope, gathering information about the poison, avoiding harmful folk treatments, and summoning urgently. Taken with the care of bites and stings, this completes the lesson: bites, stings, and poisoning are common harms ranging from trivial to deadly, the severe allergic reaction is often the gravest and swiftest danger, and the first-aider gives the basic care, recognises the serious, supports life, avoids harmful treatments, and summons within scope, while the medical treatment belongs to qualified staff. As throughout this course, this is the knowledge layer; the skills are built and certified in person, and all clinical treatment beyond basic first aid belongs to qualified medical staff.

   THE FIRST AID FOR POISONING

   a poison (harmful substance) can enter the body by:
     SWALLOWED (eaten/drunk) · BREATHED IN (gas, smoke, fumes) · ABSORBED
     (through the skin) -- the ROUTE matters. ranges trivial to DEADLY.

   1. SAFETY FIRST (esp. with poison) -- don't become a casualty yourself:
      ensure your safety; get the casualty from the SOURCE if safe; do NOT
      enter a dangerous atmosphere (fumes/gas) unprotected.
   2. SUPPORT LIFE by the systematic approach (airway, breathing, circulation)
      -- serious poisoning threatens life, supported the same way whatever the poison.
   3. GATHER what the poison was, how much, when (casualty, bystanders,
      container, smell); keep a container/sample to help the medics.
   4. DON'T give harmful/unproven treatments -- do NOT make them vomit or give
      "antidotes"; the wrong action can do more harm.
   5. SUMMON urgently -- treatment belongs to qualified medical staff (often
      with poison specialists).

In Practice: The Sting That Turned Serious

A first-aider of the Royal Kaharagian Army is on a task when a person is stung, the kind of common harm this lesson covers, and the case shows the first-aider's response and, above all, the watch for the severe reaction. At first the sting seems trivial: a painful sting like any other, and the first-aider gives the basic care, easing the pain and swelling and watching the casualty. But the first-aider knows that the gravest danger from a sting is often not the sting itself but the severe allergic reaction it can trigger, so they keep watching, and within minutes the casualty begins to react severely, the face and throat swelling, breathing becoming difficult, a rash spreading, the signs of anaphylaxis the first-aider has learned to recognise. The first-aider does not treat this as a minor sting; they recognise it at once as the life-threatening medical emergency it is.

They act urgently, as the medical-emergencies lesson taught: supporting the casualty's life, the airway and breathing above all, which the swelling threatens, managing the casualty by the systematic approach, helping the casualty use their own emergency medication for the reaction if they carry it and the first-aider is trained to assist, and summoning with the greatest urgency, because the severe allergic reaction can kill in minutes and needs medical care at once. Because the first-aider recognised the severe reaction and acted immediately, the casualty is supported and got into the chain of care in time. Had the first-aider treated the sting as trivial and not watched for the reaction, the casualty might have collapsed and died before help came.

The value is a life saved by the recognition of the severe reaction, the most important thing in this lesson. Because the first-aider gave the basic care for the sting but kept the watch for the severe allergic reaction, recognised it the moment it began, and acted urgently to support life and summon, a sting that turned deadly was met in time. The same first-aider would care for an ordinary bite by cleaning and covering the wound and watching for infection, recognise and summon for a dangerous or venomous bite, and respond to poisoning by making the scene safe, supporting life, gathering what they could about the poison, avoiding harmful treatments, and summoning, always within scope. This first-aider understood that bites, stings, and poisoning range from trivial to deadly, that the severe allergic reaction is often the gravest and swiftest danger, and that the first-aider gives basic care, recognises the serious, and summons within scope, which is the whole of this lesson.

Check Your Understanding

Explain why bites, stings, and poisoning matter and why the first-aider's task is "largely to tell the trivial from the serious." Why is the severe allergic reaction (anaphylaxis) often "the gravest and swiftest danger" from a bite or sting, and how is it recognised and treated?
Describe the basic first aid for a sting and for a bite, including the bite's infection risk and the recognition of the dangerous or venomous bite. Why does the first-aider keep watching for the severe reaction even after a sting that seemed trivial?
Describe the first aid for poisoning: the safe approach (not becoming a casualty oneself), supporting life, gathering information about the poison, avoiding harmful treatments, and summoning. Why must the first-aider not give "antidotes" or make the casualty vomit?

Reflection (write a short paragraph): This lesson teaches that bites, stings, and poisoning range from the trivial to the deadly, that the severe allergic reaction to a sting can kill in minutes and is often more dangerous than the sting itself, and that with poisoning the first-aider must above all not become a casualty themselves. Think about why telling the trivial from the serious, and watching for the severe reaction after even a minor sting, matters so much, and why the wrong "remedy" for a bite or poison can do more harm than good. What would it take to give the basic care for these common harms while recognising and urgently summoning for the few that are deadly?

Summary

A casualty may be harmed by something that bit, stung, or poisoned them, an animal or insect bite, a sting, venom, or a harmful substance swallowed, breathed, or absorbed. These are common in field and relief work and range from trivial to deadly, so the first-aider's task is largely to tell the trivial from the serious and respond rightly to each.
The gravest and swiftest danger from a bite or sting is often the severe allergic reaction (anaphylaxis): a rapid, life-threatening reaction that swells and closes the airway, causes difficulty breathing, and brings collapse, killing in minutes, so that a sting trivial to most can be fatal to one who reacts severely. The first-aider recognises it (rapid swelling of face or throat, breathing difficulty, rash, collapse) and treats it as a medical emergency, supporting life, helping the casualty use their own medication if carried, and summoning most urgently.
The basic first aid for a sting is to ease the effect (remove a left sting if safe, ease pain and swelling) and watch for the severe reaction. For a bite, it is to control bleeding, clean and cover the wound (bites are prone to infection and often need medical attention), and recognise the dangerous bite (venomous, severely injuring, or infection-risk), keeping a possibly envenomed casualty calm and still and summoning urgently.
The first aid for poisoning is, above all, the safe approach (not becoming a casualty oneself, getting the casualty from the source, not entering a dangerous atmosphere unprotected), then supporting life by the systematic approach, gathering what the poison was, how much, and when (keeping a container or sample), avoiding harmful or unproven treatments (no induced vomiting, no "antidotes"), and summoning urgently, since treatment belongs to qualified medical staff.
The first-aider gives basic care for these common harms, recognises the serious (above all the severe reaction), supports life, avoids harmful treatments, and summons within scope, while the medical treatment of serious bites, venom, reactions, and poisoning belongs to qualified staff. This is the knowledge layer; the skills are certified in person.
Cross-references: the severe allergic reaction is the medical emergency of Lesson 12 (Medical Emergencies), supported by the airway and breathing of Lesson 04; the bite wound and bleeding draw on the wound and bleeding care of Lesson 03; stings and poisoning connect to the environmental conditions of Cold, Heat, Burns, and Drowning (Lesson 06); and the harms are sustained over a long wait by Prolonged and Austere Casualty Care (Lesson 15).

Bites, Stings, and Poisoning