| Burns and blisters | - Get help for any burn bigger than the person's palm, any burn to the face, hands, feet, groin or over a joint, and any burn that is white, leathery or has no feeling.
- Singed nose hair, soot around the mouth, a hoarse voice or trouble breathing after a fire means the airway may be burned. That is an emergency.
- Red streaks, pus, spreading heat or a fever from a burn or blister means infection. Head out.
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| Carbon monoxide poisoning | - Headache, dizziness, feeling sick, weakness, confusion and sleepiness. It feels like the flu, with no fever.
- Several people sick at once, or the dog as well, and better once outside, is carbon monoxide until proved otherwise.
- Sleep hides it. People die without waking. That is why the alarm matters.
- A finger pulse meter reads normal with carbon monoxide in the blood. Do not trust it for this.
- Children, older people, pregnant women and anyone with a heart or lung problem get sick faster.
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| Cuts and infection | - Signs of infection: redness that spreads, heat, swelling that gets worse, pus, a bad smell, or pain that grows after the second day. Head out and see a doctor.
- A red streak running up the arm or leg from the cut, a fever or chills means the infection is spreading. That is urgent. Get help now.
- Numbness or a finger or toe that will not move after a cut can mean a cut nerve or tendon. Get it seen the same day.
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| Frostbite | - Thawing then freezing again does far more damage than staying frozen. If you cannot keep it warm, leave it frozen until you can.
- Skin that stays hard, grey or black after warming, or large blood filled blisters, means deep injury. Get medical care.
- Wind chill freezes skin much faster than the thermometer suggests. See Tools for the wind chill chart.
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| Hypothermia | - Shivering that has stopped in a cold person is a bad sign, not a good one.
- Handle a badly cold person gently and keep them flat. Rough handling can stop the heart.
- Somebody in it will tell you they are fine and argue about it. That is the condition talking, not them.
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| Splinting a break | - White, cold or numb fingers and toes after strapping mean the ties are too tight. Loosen them now.
- Swelling comes on fast, so a splint that fit when you tied it will bind within the hour. Check it every twenty minutes.
- A broken hip, thigh or pelvis is a stay put and send for help job. It is not a walk out.
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| Stopping bad bleeding | - Blood soaking through means the pressure is in the wrong place or is not hard enough. Pack tighter instead of piling more cloth on top.
- Cold and shock kill people who stopped bleeding an hour ago. Wrap them, including under them.
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