Trail Sense

2 - Medical

This chapter covers basic medical knowledge and techniques for common injuries and illnesses in the wilderness.

This chapter is for informational purposes only and does not replace professional advice, diagnosis, or treatment; use at your own risk, ensure compliance with local laws, and consult qualified healthcare providers whenever possible.

Be prepared

Gear

Necessities:

• Assorted bandages
• Gauze
• Surgical tape
• Safety pin or needle
• Tweezers
• Antibiotic ointment
• Sunscreen
• Insect repellent
• Prescription medications, contact lenses, and glasses
• Pain relievers (aspirin, ibuprofen, acetaminophen)
• Hand sanitizer (unscented)
• Epinephrine auto-injector (if you have severe allergies)
• Asthma inhaler (if you have asthma)

Optional:

• Wound closure strips/butterfly bandages
• Moleskin
• Molefoam
• Tourniquet
• C-Splint
• Aloe vera gel
• Antiseptic wipes
• Hydrocortisone cream
• Antihistamine pills (diphenhydramine)
• Superglue
• Cotton swabs
• Antidiarrheal medication (loperamide)
• Gas relievers (simethicone)
• Antacid tablets
• Mirror
• Tampons/pads/menstrual cup
• Dental floss
• Toothbrush
• Toothpaste (store this in your bear bag/container at night)
• Toilet paper and/or portable bidet
• Trash bags/container (check local regulations regarding toilet paper and human waste)
• Trowel
• Soap (unscented)
• Washcloth/microfiber towel
• Lip balm (unscented)
• Electrolyte mix

Knowledge and skills

Start by learning how to do the following:

• Perform basic first aid and CPR.
• Calm yourself and others.

Once you have mastered these skills, you should learn how to do the following:

• Make charcoal (see the Fire chapter).
• Make tea from plants.
• Identify medicinal plants in your area.
• Perform advanced first aid techniques, such as setting a broken bone or suturing a wound.

Common medications

This is a list of common medications hikers might carry. It's not a complete list. Only use these as your doctor says and follow the package directions. Know the side effects, how much to take, and when to take them before your trip.

• Aspirin: A pain reliever used for headaches, sore muscles, joint pain, inflammation, and fevers. Many doctors recommend taking aspirin at the first signs of a heart attack, as it can help prevent further blood clots.
• Ibuprofen: A pain reliever used for headaches, sore muscles, joint pain, inflammation, and fevers. It can also cause stomachaches for some people.
• Acetaminophen: A pain reliever used for headaches, sore muscles, joint pain, or fevers.
• Diphenhydramine: An antihistamine used for allergies, itching, and sleeplessness. It may cause drowsiness.
• Loperamide: Used to treat diarrhea.
• Simethicone: A gas reliever used for gas pains.
• Antacid tablets: Used to treat heartburn and indigestion.
• Hydrocortisone cream: Soothes itchy or red skin from bites, rashes, or irritation.
• Antibiotic ointment: Helps prevent infection in minor cuts, scrapes, or burns.

Allergic reactions

Allergic reactions can range from contact dermatitis (like poison ivy) or bug bites to anaphylaxis, a severe reaction that can be life-threatening.

Symptoms

• Rash.
• Itching.
• Swelling.
• Hives.
• Runny nose.
• Sneezing.
• Coughing.
• Scratchy throat.

Severe:

• Difficulty breathing.
• Swelling of the face, lips, or tongue.

Treatment

1. Remove the allergen if possible.
2. If there is a rash, apply calamine lotion or hydrocortisone cream.
3. Take antihistamine pills.

Severe:

Severe allergic reactions that affect breathing or cause swelling of the face, lips, or tongue require immediate medical attention. If you have an epinephrine auto-injector, use it:

1. Remove the safety cap.
2. Hold the injector with the tip against the thigh, midway between the hip and knee.
3. Press the injector into the thigh until it clicks.
4. Hold it in place for 10 seconds.
5. Repeat in 5 to 15 minutes if symptoms persist.
6. Seek medical attention as soon as possible.

If you have asthma and are having an attack, use your inhaler.

Prevention

• Avoid known allergens.
• Carry an epinephrine auto-injector if you have severe allergies.
• Take precautions for bug bites and poisonous plants (see the relevant sections).
• Tell others about your allergies and where your epinephrine auto-injector is kept.

Altitude sickness

Altitude sickness is caused by low oxygen levels at high altitudes.

Symptoms

• Headache.
• Nausea.
• Fatigue.
• Dizziness.
• Shortness of breath.
• Poor sleep.
• Loss of appetite.
• Rapid heartbeat.
• Coughing.

Treatment

• Take pain relievers (ibuprofen) for headache.
• Do not ascend until symptoms are gone.
• Descend to a lower altitude if symptoms are severe or do not improve within a day.

Prevention

• Ascend slowly.
• Acclimate before ascending further.
• Watch for symptoms above 6,500 feet (2,000 meters).

Bites, stings, and attacks

Animals

Many animals bite when threatened and some can transmit diseases.

Treatment

1. Wash the wound with soap and water.
2. Apply antibiotic ointment.
3. Cover the wound with a bandage. Pack deep wounds with gauze but do not suture or tape them closed.
4. Seek medical attention if the wound is deep, bleeding, or shows signs of infection.

If a mammal bit you, seek medical attention as soon as possible; you may need rabies shots.

Prevention

• Do not approach, corner, or feed wild animals.
• Use a bear bell or make noise to alert animals.
• Avoid animals with young nearby.
• If approached by an animal:
• Don't run, as this may trigger a chase.
• Make yourself look big.
• Make noise (not high-pitched screaming).
• Pick up children and pets.
• Back away slowly or move sideways.
• Use bear or pepper spray if available.
• Fight back if attacked, except by grizzlies.
  • Aim for eyes, nose, or throat with rocks, sticks, or hands.
  • If a grizzly attacks, play dead unless it stalks you, attacks in your tent, or continues attacking - then fight back.
• Keep your backpack on; it can offer protection.

Leeches

Leeches attach to your skin and suck your blood. They can be found in freshwater lakes, ponds, and marshes.

Symptoms

• Leech attached to the skin.
• Bleeding.
• Swelling.
• Pain.

Treatment

1. Pull it taut (but not too tight).
2. Slide a fingernail or other flat object between the leech and your skin to detach it.
3. Flick the leech away before it can reattach.
4. Clean the wound and apply antibiotic ointment.
5. Apply a bandage to control bleeding. It is normal for the wound to bleed for a while.

Do not salt, burn, or pull the leech off, as this can cause it to regurgitate into the wound.

Prevention

• Use insect repellent.
• Wear long sleeves and pants.
• Check for leeches frequently.

Snakes

Always look for snakes, especially in areas with tall grass, rocks, or logs. Snakes are most active during the day. Most snake bites are not venomous, but if you don't know the type of snake, treat the bite as venomous.

Treatment

1. Rinse the bite area with water.
2. Clean the wound and cover with a bandage.
3. Remove any rings or jewelry from the affected limb.
4. Wrap the limb with a bandage, starting at the bite and moving up the limb. The bandage should be tight but not cut off circulation. You should be able to slip a finger under the bandage. If you are bitten by a pit viper (like a rattlesnake), do not bandage or apply compression as this can lead to increased tissue damage.
5. Keep the limb immobilized, as you would a fracture, and below the level of the heart.
6. Seek medical attention as soon as possible. Call the hospital ahead of time so they can prepare antivenom if needed.

Do not do the following:

• Cut the wound.
• Suck out the venom.
• Apply a tourniquet.
• Apply ice.

Prevention

• Watch where you step.
• Wear high boots.
• Do not put your hands or feet where you cannot see.
• Do not try to catch or kill snakes unless you know they are not venomous.

Insects, spiders, and scorpions

Many insects can bite or sting you, causing pain, swelling, and itching. Some insects can also transmit diseases.

Symptoms

• Itching.
• Swelling.
• Redness.
• Pain.

Treatment

Bites

To reduce itching, avoid scratching and apply calamine lotion or hydrocortisone cream. To reduce swelling, use a cloth soaked in cold water or filled with snow/ice.

If you were bitten by a spider you believe to be venomous, treat it as you would a snake bite and seek medical attention.

Stings

Remove any stingers, taking care not to squeeze the venom sac. Treat it as if it were a bug bite.

If you were stung by a scorpion or insect you believe to be venomous, treat it as a snake bite and seek medical attention.

Bugs in eyes

See the section on objects in the eye.

Prevention

• Use insect repellent.
• Wear long sleeves and pants.
• Wrap your face with a bandana.
• Wear glasses/sunglasses (to keep bugs out of your eyes).
• Use a bug net.
• Ensure your immunizations are current for bug-borne diseases in the area.

You can make an improvised bug repellent by applying mud to your skin or using fire smoke.

Ticks

Ticks attach to your skin and will feed on your blood. They can transmit diseases such as Lyme disease and Rocky Mountain spotted fever.

Symptoms

• Itching.
• Swelling.
• Redness.
• Attached tick.

Treatment

1. Using tweezers if available, grasp the tick where it is attached to the skin.
2. Pull straight out with steady, even pressure. Do not twist or jerk the tick. Do not squeeze the tick's body.
3. Treat the area as you would for a bug bite.

Prevention

• Use insect repellent.
• Wear long sleeves and pants.
• Check for ticks frequently.

Jellyfish

Many jellyfish have small, venomous stinging cells, typically on tentacles. Even dead jellyfish can sting.

Symptoms

• Pain.
• Itching.
• Redness.
• Rash.
• Swelling.

Treatment

1. Rub sand on the area to remove the stingers, but be sure to use a barrier of seaweed or cloth over your hands to avoid getting stung there as well. You can also use the edge of a credit card or tweezers to remove the stingers.
2. Rinse the area with seawater (or vinegar if you somehow have it on you). Do not rinse with fresh water, as this can cause the stingers to release more venom.
3. Soak the area in hot water for 30 minutes.
4. Take pain relievers if needed.

Bleeding

Treatment

Seek medical attention if the wound is deep, bleeding profusely, or shows signs of infection. Infected wounds can be identified by redness, swelling, warmth, and pus.

Scrapes and minor cuts

1. Clean the wound with water.
2. Optionally, apply antibiotic ointment.
3. Apply a bandage. You can use medical grade superglue if needed.

Deeper cuts

1. Apply pressure to the wound with a clean cloth or bandage. You may need to apply pressure for about 10 to 20 minutes.
2. Clean the wound and irrigate it with water.
3. Bandage the wound with a sterile dressing.
4. Place new bandages over the old ones if they become soaked with blood.
5. Raise the wound above the level of the heart.
6. Seek medical attention if bleeding does not stop or if the wound is deep.

You can apply a tourniquet to stop blood flow if direct pressure does not work on a limb. This should only be done as a last resort, as it can cause permanent damage. Only a medical professional should remove a tourniquet.

Prevention

• Use caution when handling sharp objects.
• Do not cut toward yourself.
• Watch your footing.
• To prevent infection:
• Clean wounds.
• Use antibiotic ointment.
• Change bandages frequently.

Blisters

Symptoms

• Red, sore area.
• Blister.

Treatment

If the blister is small:

1. Cut a doughnut-shaped piece of moleskin.
2. Place the moleskin around the blister, with the blister in the hole.

If the blister is large or painful:

1. Sterilize a needle with alcohol or heat.
2. Pierce the blister near the edge and drain the fluid.
3. Clean and wash the area.
4. Apply a bandage and, optionally, antibiotic ointment.

Prevention

• Keep feet dry.
• Wear properly fitting shoes.
• Wear two pairs of socks.
• Check feet frequently for red areas and blisters.
• Stop at the first sign of rubbing.
• Apply adhesive tape or moleskin to prevent blisters.

Burns

Treatment

First-degree burns

This is about the level of a mild sunburn.

1. Soak with cool water for 5 minutes.
2. Optionally, take pain relievers.
3. Apply aloe vera gel, calamine lotion, or hydrocortisone cream.

Second-degree burns This is a burn that blisters and can be very painful.

1. Soak with cool water for at least 15 minutes.
2. Take pain relievers.
3. Pat the area dry.
4. Apply a loose bandage.

Do not pop blisters.

Third-degree burns This is a burn that goes through all layers of skin and may be life-threatening. Pain may be minimal due to nerve damage. Second-degree burns are likely also present.

1. Call emergency services.
2. Soak with cool water.
3. Remove clothing and jewelry from the area.
4. Drink water with electrolytes.
5. Bandage loosely.

Prevention

• Use caution around fires.
• Do not touch hot objects.
• Wear sunscreen.
• If your clothes catch fire, stop, drop to the ground, and roll to extinguish the flames.

Choking

If you are choking and someone is nearby, place your hands on your throat to signal that you are choking.

Treatment

Perform the Heimlich maneuver on yourself:

1. If possible, bend over a hard surface.
2. Make a fist with one hand.
3. Place the thumb side of your fist against your abdomen, below your ribcage and above your navel.
4. Grasp your fist with your other hand and press into your abdomen with a quick upward thrust.

Perform the Heimlich maneuver on someone else:

1. Stand behind the person.
2. Reach around the person's waist.
3. Make a fist with one hand.
4. Place the thumb side of your fist against the person's abdomen, below the ribcage and above the navel.
5. Grasp your fist with your other hand and press into the person's abdomen with a quick upward thrust.

Cramps

Cramps can be caused by dehydration, overexertion, or lack of electrolytes.

Symptoms

• Muscle pain.
• Muscle spasms.
• Muscle weakness.

Treatment

• Gently stretch the muscle.
• Massage the muscle.
• Apply heat or cold to the muscle.
• Drink water or an electrolyte solution containing sodium and potassium.
• Eat salty foods.
• Eat potassium-rich foods (bananas, potatoes, sweet potatoes, spinach, and lentils).
• Slow down or stop physical activity.

Prevention

• Stay hydrated.
• Replenish electrolytes.
• Warm up before physical activity.
• Stretch before and after physical activity.
• Maintain a slow and steady pace.

Dehydration

Symptoms

• Thirst.
• Dry mouth and throat.
• Fatigue.
• Dizziness.
• Dark urine.
• Reduced urine output.
• Dry skin.
• Headache.
• Confusion.

Treatment

Rehydrate by drinking water, an electrolyte solution, or tea.

Prevention

• Drink water frequently, increasing intake during physical activity.

Embedded fishhooks

Fishhooks are designed to penetrate flesh and are difficult to remove without causing further injury. Unless you need to remove the hook to prevent further injury, it's best to leave the hook in place and seek medical attention.

Treatment

Do not attempt to remove a fishhook if it is embedded in the eye.

Method 1

1. Advance the hook through the skin until the barb is exposed.
2. Cut the barb off with wire cutters like those on a multitool or pliers.
3. Pull the hook opposite from how it entered; it should come out easily.
4. Clean the wound and apply antibiotic ointment.

Method 2

1. Run a fishing line or cordage through the bend of the hook.
2. Grab the ends of the string.
3. Apply downward pressure on the eye of the hook.
4. Quickly pull the string, causing the hook to come out the way it went in.
5. Clean the wound and apply antibiotic ointment.

Prevention

• Be careful when handling fishhooks.
• Use a barbless hook if possible (these don't work as well when fishing).

Fractures

A fracture is a broken bone. A fracture can be closed (bone is broken, but skin is intact) or open (bone is broken and protruding from the skin).

Symptoms

• Pain.
• Swelling.
• Bruising.
• Deformity.
• Loss of function.
• Inability to bear weight.
• Bone protruding from the skin.

Treatment

If the bone is out of place and medical attention is unavailable for several hours, you may need to set it. Otherwise, splint it in place and seek medical attention.

Setting a bone

1. Irrigate and clean the wound if the bone is protruding.
2. Grab the limb below the fracture.
3. Pull the limb to straighten the bone. It may pop into place, and pain may decrease.
4. Splint the bone while holding it in place.
5. Cover the open wound with a sterile dressing and bandage.

Splinting a bone

1. Remove all jewelry and tight clothing from the area.
2. Apply padding around the fracture.
3. Construct a splint using a rigid object (stick, trekking pole, tent pole). It should extend past the bone break on both sides.
4. Secure the splint with bandages, tape, or cordage. It should be tight but not cut off circulation. If splinting a finger, tape it to the one next to it.
5. Apply a sling if the fracture is in the arm to help immobilize the limb.

Prevention

• Be cautious when walking on uneven terrain.
• Wear proper footwear.
• Do not overexert yourself.
• Be careful when handling heavy objects.

Frostbite

Frostbite is caused by exposure to cold temperatures, which freezes the skin and underlying tissues. If not treated, it can lead to permanent damage.

Symptoms

Frostnip:

• Redness.
• Numbness.
• Pale or white skin.
• The area is still soft and pliable.

Frostbite:

• White or grayish-yellow skin.
• Hard or waxy skin.
• Numbness.

Treatment

Frostnip:

Rewarm the area using body heat (place a hand under the armpit), warm water, or a hand warmer.

Frostbite:

Only thaw the area if you can keep it thawed. Refreezing can cause more damage. Do not use a fire to thaw the area. Do not rub the area. Seek medical attention as soon as possible.

1. Take pain medicine before thawing.
2. Prepare hot water (104-108°F / 40-42°C).
3. Thaw the area for 30 to 45 minutes or until it is pink/red and soft. If the water cools, change it - remove the area from the water before changing it.
4. Wrap the area in a sterile dressing and keep warm.

Prevention

• Wear proper clothing.
• Keep dry.
• Keep moving.
• Keep warm.
• Stay hydrated and well-fed.
• Treat at the first sign of frostnip.

Gastrointestinal issues

Gastrointestinal issues can be caused by contaminated food or water.

Symptoms

• Diarrhea.
• Vomiting.
• Nausea.
• Stomach cramps.
• Gas.

Treatment

• Rehydrate with water.
• Drink a cup of tea every few hours. You can make tea by boiling the following plants:
• Oak bark, leaves, and acorns. Boil for two or more hours. It won't taste good, but it may help.
• Common plantain leaves.
• Make a solution of a handful of ground charcoal in a cup of water. Drink a couple of spoonfuls every few hours.
• If you ate something poisonous, seek medical help immediately. If you can't contact help, drinking charcoal may help. Do not induce vomiting.

Prevention

• Boil water before drinking.
• Wash hands before eating.
• Cook food thoroughly.
• Store food properly.

Headache

Headaches can be caused by various factors, such as dehydration, stress, lack of sleep, or illness.

Treatment

• Take pain relievers (aspirin, ibuprofen, acetaminophen).
• Drink water or an electrolyte solution.
• Rest.
• Eat salty foods.

Prevention

• Stay hydrated.
• Replenish electrolytes.
• Do not overexert yourself.

Heart problems

To be safe, seek medical attention if you experience chest pain as soon as possible.

Symptoms

• Chest pain.
• Shortness of breath.
• Pain in the arms, back, neck, jaw, or stomach.
• Nausea.
• Lightheadedness.
• Cold sweat.

Treatment

1. Stop and sit comfortably.
2. If you have as-needed heart medication, take it. Otherwise, take aspirin. Chew the aspirin for faster absorption.
3. Call emergency services and have help come to you.

If someone else does not have a pulse, perform CPR.

CPR:

1. Check for responsiveness and pulse.
2. Call emergency services if there is no pulse, then start CPR.
3. Place the heel of one hand on the center of the chest.
4. Place the heel of the other hand on top of the first hand.
5. Interlock fingers.
6. Keep your arms straight and your shoulders directly over your hands.
7. Push hard and fast at least 2 inches (5 cm) at 100 to 120 compressions per minute.
8. Let the chest rise completely between compressions.
9. Continue until the patient is responsive, emergency services arrive, or you are too exhausted to continue.

If you are fully trained in CPR, perform rescue breathing after 30 compressions. Otherwise, just do compressions.

Rescue breathing:

1. Tilt the head back and lift the chin.
2. Pinch the nose shut.
3. Give two breaths, each lasting about 1 second and causing the chest to rise.
4. Repeat the cycle of 30 compressions and two breaths.

Prevention

• Stay hydrated.
• Do not overexert yourself.
• Talk to your doctor about your heart health.
• Seek medical attention if you have any chest pain.

Heat exhaustion and heatstroke

Heat exhaustion and heatstroke are caused by exposure to high temperatures and dehydration.

Symptoms

Heat exhaustion:

• Pale skin.
• Sweating.
• Fatigue.
• Rapid heartbeat.
• Dizziness.
• Nausea or vomiting.
• Muscle cramps.
• Headache.
• Chills.

Heatstroke:

• Same symptoms as heat exhaustion, but more severe.
• Confusion.
• Seizures.
• Unconsciousness.

Treatment

Heat exhaustion:

1. Move to a cool place.
2. Drink a lot of water or an electrolyte solution.
3. Douse yourself with water or immerse yourself in water.

Heatstroke:

1. Call emergency services.
2. Move to a cool place.
3. Remove excess clothing.
4. Immerse yourself in water.
5. Be cautious when rehydrating, as seizures and vomiting can lead to choking.

Prevention

• Stay hydrated.
• Wear proper clothing.
• Stay in the shade.
• Take breaks in the shade.
• Avoid physical activity during the hottest part of the day.
• Do not overexert yourself.

Hygiene

Washing

If you do not have soap, you can substitute white ashes, sand, or loamy soil.

Wash hands:

• Before and after preparing food.
• Before eating.
• After urinating or defecating.
• Before dressing a wound.
• After touching something likely to carry germs or be poisonous.

Teeth

If you do not have a toothbrush, you can clean your teeth with a small stick (fray it by chewing on one end) or a piece of cloth. An inner strand of paracord can be used as dental floss. You can grind up charcoal and combine it with water to make toothpaste.

Feet

Do the following to prevent foot problems:

• Change and wash socks daily.
• Wash, dry, and massage your feet.
• Check frequently for blisters and red areas. Use adhesive tape/moleskin to prevent blisters.

Clothing

Keep clothing clean and dry. Wash clothes with water and soap or boil them. To dry clothes, hang them in the sun or near a fire (not too close).

Bowel movements and urination

• Dig a hole 6 to 8 inches (15 to 20 centimeters) deep for bowel movements and cover it with dirt.
• If you do not have a trowel, use a stick to dig the hole.
• If you do not have toilet paper or a bidet, use non-poisonous leaves, moss, or smooth rocks to clean yourself.
• Always wash your hands after using the bathroom.
• Do not defecate or urinate near water sources (at least 200 feet / 60 meters away).

Hypothermia

Hypothermia is caused by exposure to cold temperatures, causing the body to lose heat faster than it can produce.

Symptoms

• Shivering. If shivering stops, it is a sign of severe hypothermia.
• Coldness.
• Impaired coordination.
• Memory loss.
• Slurred speech.
• Drowsiness.
• Slow breathing and heart rate.

Treatment

• Change into dry clothes.
• Increase layers of clothing.
• Add insulation into clothing (such as dry leaves).
• Consume warm liquids.
• Warm near a fire.
• Use a sleeping bag or blanket.
• Use the body heat of another person.

Prevention

• Wear proper clothing.
• Keep dry.
• Keep moving.
• Keep warm.

Objects in the eye

It is common to get objects in your eye while in the wilderness, such as dirt, sand, bugs, or an eyelash.

Symptoms

• Pain and discomfort of the eye.
• Redness of the eye.
• Excess tearing.
• Difficulty keeping the eye open.

Treatment

1. Avoid rubbing the eye.
2. Using clean water, irrigate the eye by pouring water into the eye.
3. If the object is still in the eye, use a mirror to locate it and attempt to remove it using a damp cloth or cotton swab. Be very gentle.
4. If the object is under the upper eyelid and you have a partner, have them place the tip of a cotton swab in the middle of your upper eyelid and gently fold the eyelid over the cotton swab. They can then remove the object using a damp cloth or cotton swab.
5. After the object is removed, if the eye feels scratchy, place a cold, damp cloth over it, keep the eye closed and rest, use eye drops, or construct an eye patch using a bandage or cloth.
6. Seek medical attention if the object is not removed or symptoms persist.

Prevention

• Wear glasses or sunglasses.
• Don't lift objects with dirt on them above your head without eye protection.

Panic attacks and calming techniques

Symptoms

• Rapid heartbeat.
• Sweating.
• Trembling.
• Shortness of breath.
• Chest pain.
• Nausea.
• Dizziness.
• Fear.
• Numbness or tingling.

Treatment

1. Sit down.
2. Close your eyes.
3. Do one or more of the following:
4. Take slow, deep breaths.
5. Count to 10.
6. Recite a calming phrase.
7. Visualize a calming place.
8. Meditate.
9. Tense up and relax each muscle.
10. Listen to music or white noise.
11. Assure yourself that you will be okay.

Poison ivy and contact dermatitis

Contact dermatitis is caused by contact with poisonous plants, such as poison ivy, poison oak, poison sumac, and stinging nettle.

1. Poison ivy: A toxic plant with three glossy, pointed leaflets, commonly found in forests, fields, and along trails. Contact with its oil causes itchy rashes and skin irritation.
2. Stinging nettle: A plant with serrated leaves and tiny stinging hairs, commonly found in moist, shaded areas. Contact causes a painful, itchy rash.

Symptoms

• Burning, reddening, and swelling rash
• Itching
• Blisters

Treatment

1. Try to remove oil from the plant using soap and water. Sand or dirt can be used as a substitute unless there are blisters.
2. Dry the area.
3. Apply calamine lotion or hydrocortisone cream to reduce the itch. If unavailable, apply a tannic acid solution (boil acorns or oak bark in water) or crushed jewelweed.
4. Optionally, take antihistamine pills to reduce itching.

If you touched stinging nettle, apply mud to the area and remove it when it dries. You can also use tape to pull the small needles out.

Avoid scratching the rash, as it can cause infection. Leave blisters alone.

Prevention

Learn to identify and avoid contact with the following plants:

• Cowhage
• Poison ivy
• Poison oak
• Poison sumac
• Rengas tree
• Trumpet vine
• Stinging nettle

If you come into contact with these plants, wash the area with soap and water as soon as possible. Do not wait for a rash to appear. Do not burn these plants, as the smoke can cause irritation.

Sleeping

Falling asleep can be difficult in the wilderness, but getting adequate rest is important for maintaining energy. To help yourself fall asleep, wind down at night by avoiding strenuous activity and calming your mind, perhaps using meditation. Ensure you aren't too hot or cold and that your sleeping area is comfortable. You might find it easier to sleep if you make a pillow by stuffing spare clothing or a stuff sack with dry leaves or other soft materials.

Some people may also find it necessary to block out noise using earplugs or listening to music or white noise if available.

Snow blindness

Snow blindness is caused when too much sunlight reflects off snow, ice, or water into your eyes.

Symptoms

• Eyes are red, scratchy, and watery.
• Sensitivity to light.
• Headache.

Treatment

Cover your eyes with a dark cloth until symptoms disappear.

Prevention

Wear UV-protective sunglasses or snow goggles. If you do not have these, you can make snow goggles from a piece of cloth or a piece of bark with slits cut in it. You can also put soot under your eyes to reduce glare.

Splinters, thorns, spines, and needles

Splinters and thorns can be painful and may lead to infection if not removed.

Treatment

If the splinter is deep or very large, seek medical attention and do not try to remove it yourself.

1. Inspect the splinter to see if any part is exposed and determine which direction it entered.
2. If no part is exposed, sterilize a needle using hand sanitizer or a flame and gently use it to expose one end of the splinter.
3. Use tweezers to grab the exposed end of the splinter, preferably pulling in the opposite direction from how it entered.
4. Slowly pull the splinter out.
5. Repeat if any pieces remain.
6. If the splinter drew blood when removed, treat it as a cut. Applying antibiotic ointment and a bandage won't hurt.

Thorns, spines, and needles can be removed the same way as splinters. Some thorns may be easy to remove without tweezers.

For urchin spines, soak the area in hot (not scalding) water for 10 to 90 minutes before removal.

Prevention

• Use caution when handling dry wood or thorn bushes.
• Avoid walking through thorn bushes.
• Wear long sleeves and pants if going off trail.
• Don't touch cacti or porcupines.
• Watch out for urchins if walking in the ocean.

Sprains and strains

Sprains are injuries to a tendon or ligament, while strains are injuries to a muscle or tendon.

Symptoms

• Pain.
• Swelling.
• Bruising.
• Loss of functional movement.
• Muscle spasms and cramping.
• Muscle weakness.
• A pop or tear may be heard or felt during injury.

Treatment

1. Rest the injured area.
2. Ice the area for 24 to 48 hours. You can improvise using a cloth soaked in cold water or filled with snow/ice.
3. Compress the area with a bandage or splint.
4. Elevate the area.

Prevention

• Warm up before physical activity.
• Wear proper footwear.
• Do not overexert yourself.
• Watch your step.

Submerged in water

Falling through ice

If you fall through the ice, do the following:

1. Turn back the way you came.
2. Kick your legs to push yourself onto the ice.
3. Roll away from the hole.
4. Crawl on your stomach to safety.
5. Move to a safe, warm location as quickly as possible.
6. Get out of wet clothes and into dry clothes.
7. Use leaves or dry grass as insulation and warm up near a fire.

Rip currents

If caught in a rip current, swim parallel to the shore until you are out of the current. Then, swim back to shore.

Sunburn

Sunburn is caused by prolonged exposure to the sun's ultraviolet (UV) radiation.

Symptoms

• Redness.
• Pain.
• Swelling.
• Blisters.

Treatment

1. Get out of the sun.
2. Run cool water over the burn or apply a cold compress to relieve pain.
3. To reduce pain and swelling, apply aloe vera gel, calamine lotion, or hydrocortisone cream.
4. Optionally, take pain relievers.
5. Drink extra water.

Do not pop blisters.

Prevention

• Wear sunscreen with an SPF of at least 30.
• Wear a hat.
• Wear long sleeves and pants.
• Stay in the shade.
• Take extra precautions on days with a high UV index.

Craft: Sunglasses

You can make sunglasses using a piece of cloth or birch bark with slits cut in it. This helps protect your eyes from UV rays and glare.

Resources

• Cloth or birch bark
• Cordage

Instructions

1. Trim a piece of cloth or birch bark large enough to cover your eyes.
2. Cut small rectangular slits over where your eyes will be. Don't cut the slits while wearing the mask.
3. Attach cordage to both ends of the mask and ensure it fits snugly on your face.