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69c7 Recognizing Medical Emergencies and Warning Signs | Recognizing Serious Warning Signs and Acting Quickly When Symptoms May Be an Emergency


Some emergencies are difficult to identify with certainty, but several patterns deserve immediate attention because delay can be dangerous. Severe chest pain, major breathing difficulty, possible stroke signs, severe allergic reactions, prolonged or unusual seizures, major injury, and sudden collapse all require calm but urgent judgment.
The topics in this section help readers notice serious warning signs without trying to diagnose the cause. They emphasize early emergency contact, protecting the person from further harm, following professional instructions, and acting when the situation appears severe even if the exact medical problem is unclear.

69c7.1 Recognizing Severe Chest Pain and Breathing Difficulty

Severe chest pain, pressure, tightness, or discomfort combined with shortness of breath, sweating, nausea, collapse, or pain spreading to the arm, jaw, back, or upper abdomen can indicate a medical emergency. Breathing difficulty by itself can also be serious when it is sudden, severe, worsening, or prevents normal speech. Do not ask the person to walk around or wait for the symptoms to become unmistakable.
Call emergency services and help the person rest in the position that makes breathing easiest. If they have their own prescribed emergency medicine, assist only in a way you understand and that matches their treatment plan or dispatcher advice. Do not give someone else's medication. Watch breathing and responsiveness continuously, and be ready to start CPR if they become unresponsive and stop breathing normally. The exact cause cannot be confirmed by first aid, but severe chest or breathing symptoms justify urgent professional assessment. Treat worsening pain, breathing difficulty, or collapse as more urgent.

69c7.2 Recognizing Possible Signs of a Stroke

A stroke can cause sudden weakness or numbness on one side of the face or body, facial drooping, difficulty speaking or understanding speech, loss of coordination, vision changes, or a sudden severe headache. Symptoms may be painless and can sometimes improve after a short time, but temporary improvement does not make them safe to ignore.
Use a simple recognized stroke check such as asking the person to smile, raise both arms, and repeat a short sentence, while remembering that not every stroke looks the same. Note the time the person was last known to be well if you can establish it without delaying the call. Contact emergency services immediately and do not give food, drink, or unprescribed medicine. Keep the person safe and monitor breathing and consciousness. Rapid professional assessment matters because treatment decisions can depend on timing and on tests that cannot be done at the scene. If symptoms resolve before help arrives, still report exactly what was seen and when it started.

69c7.3 Taking Severe Allergic Reactions Seriously

A severe allergic reaction can affect breathing and circulation very quickly. Warning signs include swelling of the tongue or throat, difficulty breathing or swallowing, wheezing, widespread hives with other serious symptoms, dizziness, collapse, or rapid worsening after exposure to food, medicine, an insect sting, or another trigger. A skin rash alone is not the same as anaphylaxis, but breathing or circulation problems make the situation urgent.
Call emergency services immediately. If the person has a prescribed adrenaline auto-injector, help them use it according to their plan, your training, or dispatcher guidance. Do not delay while searching for an antihistamine when severe symptoms are present. Keep the person in the safest position for breathing and circulation, monitor them continuously, and be prepared for CPR if normal breathing stops. Symptoms can return after initial improvement, so professional observation is important even when the person seems better after treatment.

69c7.4 Recognizing Seizures That Need Emergency Help

Many seizures stop on their own, but emergency help is normally needed if a seizure lasts more than about five minutes, another seizure begins before recovery, breathing or waking is difficult afterward, the person is injured, the seizure happens in water, or it is the person's first known seizure. Pregnancy is also a reason for urgent assessment. For someone with diabetes, loss of consciousness or another serious emergency feature adds concern; diabetes alone is not an automatic emergency criterion for every seizure.
During the seizure, move dangerous objects away, protect or cushion the head if practical, and note the start time. Do not restrain the person and do not put anything in the mouth. When the movements stop, check breathing and monitor recovery; place a normally breathing person in a safer airway position if appropriate. Stay with them while they recover, follow emergency instructions when help is needed, and report what happened and how long it lasted. Local guidance may add other urgent-care reasons.

69c7.5 Responding to Severe Injury or Sudden Collapse

A severe injury or sudden collapse should trigger a rapid check of safety, responsiveness, breathing, and major bleeding. Call emergency services early when the person is unresponsive, breathing abnormally, bleeding heavily, showing signs of serious head or spinal injury, or deteriorating quickly. Do not spend several minutes trying to discover the exact cause before starting the basic emergency response.
If there is severe bleeding, control it with direct pressure while help is arranged. If the person is not breathing normally, begin CPR according to training or dispatcher instructions. When they are breathing, keep the airway safe, limit unnecessary movement after major trauma, and continue observing. Ask witnesses for brief useful information, such as what happened and whether the person complained of symptoms before collapsing. The first aider's role is to protect life and prevent further harm until professional assessment becomes available.

69c7.6 Acting Quickly When You Are Unsure but the Situation Looks Serious

You do not need a confirmed diagnosis before calling for help when a situation looks dangerous. Sudden collapse, severe pain, major breathing difficulty, heavy bleeding, new weakness or speech problems, serious burns, prolonged seizure, or rapidly worsening behavior are enough to justify urgent action. Trust observable warning signs rather than waiting for complete certainty.
Explain clearly to the emergency service what you can see and what has changed. They can help decide the urgency and may give instructions while responders are being arranged. Continue simple safe first aid, monitor breathing and responsiveness, and avoid giving food, drink, or unrequested medicine when the condition is uncertain. If the situation later proves less serious, the early call can be reassessed; the greater risk is delaying help during a time-sensitive emergency. Acting cautiously is not the same as panicking—it is using limited information to protect the person.