Last updated September 2026 · By Christopher Smith, Bright Light LED
Important: this guide is general information, not medical training or advice. In any serious emergency, call 911. If you spend time in remote areas, take a wilderness first aid course from an organization such as the American Red Cross, NOLS or SOLO.
Short answer: in an outdoor emergency, make sure the scene is safe, call for help early, control serious bleeding, keep the injured person warm or cool as needed, and do not move them if you suspect a spine injury. Carry a stocked first aid kit, a whistle and a reliable light, because many emergencies get worse after dark.
1. Make the scene safe and call for help early
Before helping anyone, check that you will not become the next casualty: falling rock, moving water, traffic, lightning or an animal. Then call 911 as soon as possible. Even with weak signal, a call may go through, and text-to-911 works in many areas. In places with no coverage, a satellite messenger or personal locator beacon is the only reliable way to call for rescue.
2. Control serious bleeding
Press firmly and directly on the wound with a clean cloth or gauze, and keep pressing. If blood soaks through, add more material on top rather than removing the first layer. For life-threatening bleeding from an arm or leg that pressure will not control, a tourniquet placed above the wound can save a life. A Stop the Bleed course teaches how to do this correctly.
3. Cuts, scrapes and blisters
Clean minor wounds with clean water, remove visible dirt, and cover with a bandage. Watch for signs of infection such as increasing redness, swelling, warmth or pus. For blisters, cover hot spots early with moleskin or tape before a blister forms. Leave small intact blisters alone and protect them with padding.
4. Sprains and suspected fractures
For a sprain, rest the joint, apply cold if you have it, wrap it with a compression bandage and elevate it. If a bone might be broken, do not try to straighten it. Support the limb in the position you found it with a splint made from padding and something rigid, such as trekking poles or a rolled sleeping pad, and get medical help. If you suspect a head, neck or back injury, keep the person still and wait for rescuers.
5. Bites and stings
Snake bites
Keep the person calm and still, remove rings and watches before swelling starts, keep the bitten limb still and roughly at heart level, and get to a hospital. Do not cut the wound, suck out venom, apply ice or use a tourniquet.
Bee stings and severe allergic reactions
Scrape out a visible stinger and wash the area. Watch for signs of anaphylaxis: trouble breathing, swelling of the face or throat, hives spreading across the body, or dizziness. If they appear, help the person use their prescribed epinephrine auto-injector and call 911 immediately. A second dose may be needed if symptoms return.
Ticks
Use fine-tipped tweezers to grab the tick as close to the skin as possible and pull straight up with steady pressure. Clean the area afterward. Note the date in case a rash or fever develops in the following weeks.
6. Heat exhaustion and heat stroke
Heat exhaustion shows up as heavy sweating, weakness, dizziness, nausea or headache. Move the person to shade, loosen clothing, cool them with wet cloths and give water or electrolytes if they are alert.
Heat stroke is a life-threatening emergency. Warning signs include confusion, slurred speech, fainting, or very hot skin. Call 911 and cool the person as fast as possible, ideally with cold water immersion or soaking and fanning. Do not give fluids to someone who is confused or unconscious.
7. Hypothermia and frostbite
Hypothermia starts with shivering, clumsiness and confusion. Get the person out of wind and wet, replace wet clothes with dry layers, insulate them from the ground, and give warm sweet drinks only if they are fully alert. Handle them gently and get help if symptoms are more than mild.
Frostbite causes numb, pale or waxy skin. Do not rub it. Only rewarm frostbitten skin if there is no chance of it freezing again, using warm — not hot — water, and avoid walking on thawed feet if you can.
First aid after dark: why light matters
Injuries do not wait for daylight, and trying to treat a wound with a phone flashlight in one hand is a mistake. A headlamp keeps both hands free and puts light exactly where you are looking. A lantern lights the whole area around a casualty.
Light is also a signal. Three flashes, three whistle blasts or three of any signal, repeated, is widely recognized as a call for help. Many flashlights have a dedicated SOS mode for exactly this.
What to pack in an outdoor first aid kit
- Adhesive bandages in several sizes, gauze pads, roll gauze and medical tape
- Elastic compression bandage and a SAM-style splint or padding
- Antiseptic wipes and a small bottle of clean water for irrigation
- Tweezers, trauma shears and nitrile gloves
- Blister care: moleskin or blister pads
- Pain relievers, antihistamines and any personal prescription medications, including an epinephrine auto-injector if prescribed
- A tourniquet, if you are trained to use it
- An emergency blanket and a whistle
- A headlamp or flashlight with spare batteries — an AA-powered flashlight is a good choice for kits that sit unused
Frequently asked questions
What is the universal distress signal?
Three of any signal in a row — three whistle blasts, three flashes of light or three shouts — repeated at intervals. SOS in Morse code (three short, three long, three short) is also widely recognized.
Should you suck out snake venom?
No. Cutting or sucking the bite does not remove venom and can cause more harm. Keep the person still and get to a hospital.
How do you remove a tick?
Grab it close to the skin with fine-tipped tweezers and pull straight up with steady, even pressure. Do not twist, burn or smother it.
Where can I learn wilderness first aid?
The American Red Cross, NOLS and SOLO all run wilderness first aid courses, usually over a weekend. Stop the Bleed courses teach bleeding control in a few hours.
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