When that happens, you fall back on basic principles and improvise with what is around you. Here are 10 field-tested hacks for common problems, several of them with research behind them, that can hold someone over until they get real care. They are stopgaps, not replacements for the ER or 911 when the situation is serious.
Dr. Amy Faith Ho, an emergency physician at a trauma center, introduced the first five as "MacGyver" tips.
1. Black tea bags as a vasoconstrictor
Tea bags are almost always within reach. Any regular black tea works, because it contains tannic acid, a proven vasoconstrictor. Wet the bag and apply it with light pressure to slow mucous membrane bleeding. It works well when bleeding restarts after a tooth extraction, and for cuts inside the mouth or bleeding hemorrhoids.
2. Remove a ring with a string
A finger gets injured and starts to swell, and the ring won't clear the knuckle. Skip the ring cutters. Slip the end of some dental floss or thin string under the ring, then wrap the rest tightly around the finger past the swelling. Have someone unwind it slowly from the ring's edge down the finger, walking the ring off as they go.
3. Rubbing alcohol for nausea
Ordinary rubbing alcohol helps with nausea, and it's hiding in most bathroom cabinets. Pour some into a small container and have the person inhale through the nose and exhale through the mouth. Repeat three times every 15 minutes. A randomized controlled trial in Annals of Emergency Medicine found that inhaled isopropyl alcohol lowered nausea more than inhaled saline, and other ED trials found it worked about as well as oral ondansetron for short-term relief (PubMed). It works in the hospital or clinic too.
4. Milk for capsaicin burns
Pepper spray went off, or someone rubbed their eyes after chopping chili peppers. Water won't help, because capsaicin is fat-soluble. Anything fatty relieves it fast. Pour whole milk over the area, even into the eyes. Mayonnaise works on a skin burn. According to Dr. Ho, you can actually see the fatty globules lifting the capsaicin out.
5. Hot sauce when vomiting after cannabis use
When someone is vomiting excessively, ask whether it happens regularly and whether hot showers help. If so, the cause is likely cannabis hyperemesis. A receptor responds to both hot water and capsaicin, and capsaicin cream relieves the condition. Cream is rarely on hand, but hot sauce contains the same ingredient. Use a mild to moderate sauce, around 4,000 to 12,000 Scoville units, and rub it on the stomach. The person will feel some burning. When it's done its work, rinse with milk to neutralize the capsaicin.
6. Superglue for lacerations
The skin glue used in the ER is essentially superglue with a tweaked formula so it doesn't sting. You can close a simple, clean laceration with ordinary superglue, as long as there's no sign of infection and no tendon damage. Wash the wound well and bond the edges together. The glue sloughs off on its own.
7. Cardboard box and t-shirt for splints
A fracture hurts on every bump until it's casted, so an unsplinted trip to the ER is rough. Cardboard is everywhere, and newer emergency splints are a specialized type of cardboard anyway. Cut a few layers to size, place lengths on either side of the limb to immobilize it, and wrap something around to hold it. A t-shirt does the job.
8. Dig into the cooler to treat sprains
Strains and sprains happen outdoors, and the treatment is Rest, Ice, Compression, and Elevation (RICE). Someone always has a cooler. Use real ice in a plastic bag, an ice pack, or even a cold can of soda. At home, a bag of frozen veggies molds neatly around the injury. Always put a barrier, like a towel or clothing, between the cold pack and the skin, and don't apply it for more than 20 minutes every two to three hours.
9. Sterile dressings for open wounds
Dressings on open wounds should be sterile, but what do you use when none are available? Find the cleanest sealed option. A sanitary pad or tampon is near sterile and makes a great pressure dressing. Unopened plastic grocery bags are sterile inside thanks to manufacturing heat, so you can tear one open and place the inner surface over the wound, then wrap it with whatever you have. Worth remembering for mass-casualty situations where dressing material runs short.
10. Ice pack for migraine headache
Cold therapy has long helped with migraine, though the mechanism is still unclear. A randomized controlled trial in the Hawaii Journal of Medicine and Public Health found that an ice wrap applied at the front of the neck, over the carotid arteries, reduced migraine pain, likely by constricting blood vessels, reducing inflammation, or overriding pain signals (PMC). Apply for no more than 20 minutes, or less if it gets too cold.
Frequently Asked Questions
Does smelling rubbing alcohol really stop nausea?
Yes, there is real evidence for it. A randomized controlled trial found inhaled isopropyl alcohol cut nausea more than inhaled saline, and other ED studies found it about as effective as oral ondansetron for short-term relief. Have the person take slow breaths from the pad, and stop if it irritates them.
Is it safe to close a cut with regular superglue?
Only for a small, clean, shallow cut with no signs of infection and no deep or gaping edges. Medical skin glue is a refined version of the same chemistry. Anything deep, dirty, on the face, over a joint, or still bleeding heavily needs proper medical care.
How long should I leave ice on a sprain or migraine?
No more than about 20 minutes at a time, with a barrier like a towel between the cold pack and the skin, and a break of two to three hours before reapplying. Longer than that risks a cold injury and does not add benefit.
Why does milk work better than water on a chili or pepper-spray burn?
Capsaicin, the compound that causes the burn, is fat-soluble, so water just spreads it around. The fat in whole milk binds and lifts it away, which is why dairy beats water for relief.
When should I skip the hack and just go to the ER?
Any time you see severe or uncontrolled bleeding, trouble breathing, chest pain, a deformed or open fracture, a head injury, or a fast-worsening reaction. These tricks buy time for minor problems. They are not a reason to delay calling 911 for anything serious.