Ants don’t bite people for food. An attack is a defensive reaction from an ant whose space you’ve blundered into. Some ants, like fire ants, do more than bite: they grip with their jaws and then sting, and the sting is where most of the pain comes from.1PubMed Central. Biological Activities and Ecological Significance of Fire Ant Venom Alkaloids For most people the result is a sore, itchy few days rather than a medical problem, though a few react much more strongly.
What To Do Right After Ants Bite Or Sting You
Fire ant stings feel like a sharp, burning prick, often several at once in a cluster or a line. Ants commonly climb up a foot or ankle before many of them sting together, so the first sign can be a sudden wave of burning around the shin. Red bumps appear within minutes and itch or burn. Once you’re clear of them, check socks, shoe edges and waistbands, where ants like to hide.
If ants are still on you, pick them off by hand rather than brushing them.2healthywa.wa.gov.au. First aid for fire ant stings Step well away from the nest before you start picking them off. Brushing makes them more aggressive, and spraying them with water can make them latch on with their jaws.3healthywa.wa.gov.au. First aid for fire ant stings A stinging ant keeps clamping and moving to new spots, so each second on your skin can mean more stings.4PubMed Central. Biological Activities and Ecological Significance of Fire Ant Venom Alkaloids Swatting only crushes them on your skin without removing them. Try not to scratch the fresh bites, because scratching can break the skin and let infection in.
Wash the area carefully with soap and water.5healthywa.wa.gov.au. First aid for fire ant stings Then apply an antiseptic if you have one.6Queensland Government. How to treat fire ant stings Next, hold an ice pack or cold compress on the stings to ease pain and swelling.7Queensland Government. How to treat fire ant stings Wrap the ice in a cloth rather than placing it on bare skin, and apply it for about 10 to 20 minutes, repeating as needed. A bag of frozen vegetables or a cold wet cloth works if you have no ice pack. Cold helps most in the first hours.
Easing The Pain And Itch Over The Next Few Days
Paracetamol (acetaminophen) or an anti-inflammatory such as ibuprofen can relieve the pain.8healthdirect. Ant stings and bites An antihistamine tablet can reduce swelling, redness and itch.9Queensland Government. How to treat fire ant stings Creams or other topical treatments can be added to cold packs and pain relievers.10PubMed. Bites and stings of the arthropod kind. Treating reactions that can range from annoying to menacing
Follow the label dose for age and weight, especially for children. Some antihistamines cause drowsiness, which can help at night but not when you’re driving. An anti-itch cream can be dabbed on individual bumps. If you take other regular medicines, check with a pharmacist before adding anything.
The burning pain usually fades within hours, while the itch lasts longer and often peaks a day or two after the sting. Swelling may look worse the next morning before it improves.
Pain or swelling that keeps getting worse after a couple of days needs a look. So does spreading warmth or redness, which points to the problems covered below. If medicines aren’t controlling the itch, ask a pharmacist or doctor.
When An Ant Sting Is An Emergency
Reactions range from small local blisters and larger swelling that builds later, to life-threatening anaphylaxis, a severe allergic reaction affecting the whole body.11PubMed. Hypersensitivity to fire ant venom The severe end is uncommon with fire ants: in states where they live, about 8.5 in 10,000 people have had one.12PubMed Central. Fire ant-venom anaphylaxis prevalence in the general population and patients with systemic mastocytosis Some other ants are riskier: where Australia’s jack jumper ant lives, about 3 in 100 people have had a severe allergic reaction to its sting.13PubMed. Towards complete identification of allergens in Jack Jumper (Myrmecia pilosula) ant venom and their clinical relevance: An immunoproteomic approach
Signs of a severe allergic reaction include trouble breathing, wheezing or throat tightness. Swelling of the lips, tongue or face away from the sting is another, as are hives spreading across the body, dizziness or fainting. Vomiting, or a sudden sense that something is badly wrong, also counts.
If this happens, call emergency services right away rather than waiting to see what develops. Use an adrenaline auto-injector if one has been prescribed. Lie down with your legs raised, unless breathing is easier sitting up. An antihistamine alone is not enough for a severe reaction. A whole arm or leg swelling over a day is a large local reaction, usually not an emergency, though it still deserves a call to a doctor.
For small children, the number of stings matters. Get medical help for:
- A baby under 1 year with 20 or more stings.14Seattle Children’s Hospital. Fire Ant Sting
- A newborn with more than 5 stings.15Seattle Children’s Hospital. Fire Ant Sting
- A child with more than 5 stings for every 10 pounds (5 kg) of weight.16Seattle Children’s Hospital. Fire Ant Sting
- A teen with more than 50 stings.17Seattle Children’s Hospital. Fire Ant Sting
Why Fire Ant Stings Turn Into White Blisters
Fire ant stings often form small white pus-filled bumps.18PubMed. Hypersensitivity to fire ant venom They turn into white-topped blisters roughly a day after the stings, often on a red base, and can look alarming. These last a week or more.19UCLA Health. There are several stages to fire ant bites The fluid inside is usually free of germs, because it’s an immune reaction rather than an infection.20PubMed Central. Ant sting-induced whole-body pustules in an inebriated male: A case report They may leave a dark mark that fades over weeks.
Scratching or breaking open the white blisters raises the risk of a bacterial infection.21Orkin. How to Identify and Treat Fire Ant Bites Treat them like any wound: keep them covered, clean and free of dirt.22UCLA Health. There are several stages to fire ant bites
A healing blister stays small and slowly dries. Infection brings spreading redness, warmth and growing pain. Yellow crusting, oozing or fever also suggest infection. An infected sting needs a doctor, who may prescribe antibiotics.
With children, trim nails short and cover stings with a light bandage. If night itching is a problem, an antihistamine at bedtime can help.
Why Ants Bite And Sting People
Ants bite or sting when their nest is disturbed, when they’re stepped on, or when they’re trapped against skin.23Bulwark Pest Control. Why Do Ants Bite Humans and What Should You Do? A fire ant uses the same jaw-and-sting attack on caterpillars and other small prey.24PubMed Central. Biological Activities and Ecological Significance of Fire Ant Venom Alkaloids
One disturbed ant releases alarm signals that recruit others, and a mound can pour out hundreds of workers in seconds. That’s why people get dozens of stings in moments.
Different ants have different weapons. A fire ant grips skin with its jaws, stings, then moves to another spot to sting again.25PubMed Central. Biological Activities and Ecological Significance of Fire Ant Venom Alkaloids Carpenter ants and their relatives don’t sting; they bite and may spray acid into the wound.26PubMed Central. Beyond formic acid: Peptides in carpenter ant venoms aid in disease protection Fire ant venom is mostly oily compounds that cause the burning feeling.27PubMed. Alkaloid from fire ant venom: identification and synthesis Some tropical ants, such as the bullet ant, carry venom that directly fires pain nerves.28PubMed Central. An Integrated Proteomic and Transcriptomic Analysis Reveals the Venom Complexity of the Bullet Ant Paraponera clavata
A pinch with no lingering burn is usually just a bite. Burning pain and a white blister a day later point to fire ants.
In floods, fire ants link together into floating rafts.29PubMed. Envenomation From Flood-Related Fire Ant Rafting: A Cautionary Note People wading in flood water or clearing debris after storms are more likely to be stung.30PubMed. Envenomation From Flood-Related Fire Ant Rafting: A Cautionary Note Other risky moments include standing or sitting near a mound in the grass, gardening by hand, and moving pots and logs.
Allergy Shots If You’ve Had A Severe Reaction
Venom immunotherapy, a course of allergy shots with small doses of venom, prevents most whole-body reactions to later stings.31PubMed Central. Venom immunotherapy for preventing allergic reactions to insect stings In trials, about 3 in 100 treated people reacted to a later sting compared with about 40 in 100 untreated.32PubMed Central. Venom immunotherapy for preventing allergic reactions to insect stings For jack jumper ant allergy, none of the treated adults reacted to a test sting, compared with 72 in 100 untreated.33PubMed. Ant venom immunotherapy: a double-blind, placebo-controlled, crossover trial
After any severe reaction, ask your doctor for a referral to an allergist. Skin or blood tests show which venom you react to. The course involves regular injections, usually over years. Until then, carry a prescribed adrenaline auto-injector. A normal itchy blister is not an allergy and needs no testing, and large swelling at the sting site alone rarely calls for shots.
How To Keep Ants From Biting You Again
Baits are the easiest, cheapest and most effective fire ant control.34Mississippi State University Extension Service. Control Fire Ants in Your Yard Used properly and early, they cut yard mounds by 80 to 90 percent.35Mississippi State University Extension Service. Control Fire Ants in Your Yard Scatter bait around mounds rather than on top of them, and apply it when the ground is dry and ants are actively foraging. Worker ants carry the bait back to the queen, so results take days to weeks. Avoid digging into mounds.
To keep ants out of the house, keep mulch, leaf litter, watering and plants several inches back from walls.36University of California Agriculture and Natural Resources. Why Do Ants Bite Humans and What Should You Out? Prune shrubs and trees away from the house so they don’t bridge to it.37University of California Agriculture and Natural Resources. Why Do Ants Bite Humans and What Should You Out? Control aphids, scale insects and similar pests whose sweet honeydew feeds ants.38University of California Agriculture and Natural Resources. Why Do Ants Bite Humans and What Should You Out? Seal cracks and gaps where ants come inside.39University of California Agriculture and Natural Resources. Why Do Ants Bite Humans and What Should You Out?
Outdoors in fire ant areas, wear closed shoes and socks, and look for mounds before sitting or laying out a blanket. Tuck trousers into socks and wear gloves for gardening.
If Your Dog Gets Stung By Ants
Stings on a dog’s nose and face can swell enough to close the airway, and a mass fire ant attack can be deadly for pets.40PetMD. How to Identify and Treat Ant Bites and Stings in Dogs Ask your vet before giving an antihistamine such as diphenhydramine, and ask about the dose.41PetMD. How to Identify and Treat Ant Bites and Stings in Dogs Vomiting, collapse, weakness, trouble breathing or pale gums mean go to an emergency vet immediately.42PetMD. How to Identify and Treat Ant Bites and Stings in Dogs
For first aid, move the dog away from the mound and pick ants off by hand, as you would for a person. Check paws, belly and face, where ants gather. A cool compress on stung areas eases swelling.