What to Do When Stung by a Bee: Treatment and Warning Signs

Getting the stinger out fast matters more than how you remove it. Envenomation increases with every second the stinger stays embedded, so the single most important step after a bee sting is to pull, scrape, or flick the stinger away as quickly as possible. For the vast majority of people, a sting produces a painful but harmless local reaction that resolves on its own. But for a small percentage, a sting can trigger a life-threatening allergic reaction that requires emergency treatment, and knowing what that looks like is the difference between a bad afternoon and a medical crisis.

Remove the Stinger Immediately

Honeybees are the only common stinging insect that leaves its barbed stinger behind, along with a venom sac that continues pumping venom into your skin after the bee flies away (and dies). For decades, first-aid guides insisted you should scrape the stinger out with a credit card or fingernail rather than pinching it, on the theory that squeezing the venom sac would inject more venom. That turns out to be wrong. A controlled study on human subjects found no meaningful difference in the size of the local reaction between stingers that were scraped off and those that were pinched and pulled out.¹ What did matter was how quickly the stinger came out. The swelling increased measurably even within a few seconds of delay.²

So use whatever method is fastest. If your fingernails are right there, pinch and pull. If you happen to have a card handy, scrape. Flick it off with your thumb. The method genuinely does not matter. Speed does.

Treating a Normal Sting at Home

A typical bee sting produces sharp, burning pain at the site within seconds, followed by redness, swelling, and itching that peak over the first day or two. This is not an allergic reaction. It is your body responding to a cocktail of compounds in the venom, especially melittin, which activates pain receptors and triggers local inflammation.³ Everyone stung by a bee experiences this to some degree.

For a routine sting, the treatment is straightforward:

• Wash the area: Soap and water to reduce infection risk.
• Cold compress: Ice wrapped in a cloth for 10 to 20 minutes at a time reduces swelling and numbs the pain.
• Over-the-counter pain relief: Ibuprofen or acetaminophen for pain. An antihistamine like diphenhydramine or cetirizine can help with itching.
• Hydrocortisone cream: A low-strength topical steroid applied to the site eases itching and inflammation.

Most stings resolve in a few hours to a couple of days. Resist the urge to scratch, which can break the skin and invite infection.

Large Local Reactions

Some people develop swelling that extends well beyond the sting site, sometimes covering an entire limb. These large local reactions, which can reach 10 to 20 centimeters across and last about a week on average, are driven by an immune response to the venom and occur in up to about one in four people.⁴⁵ They look alarming but are not the same thing as anaphylaxis. The swelling stays in the region of the sting rather than affecting the whole body.

If you get a large local reaction, the home remedies listed above still apply, but you may need to continue antihistamines for several days. Elevating the affected limb helps reduce swelling. If the area becomes intensely painful, develops streaks of redness radiating outward, or oozes pus, those are signs of a secondary infection, not a venom reaction, and you should see a doctor for possible antibiotics.

People who have had a large local reaction to one sting sometimes worry that the next sting will cause full-blown anaphylaxis. The risk is not zero, but it is much lower than many people fear. Research shows that the vast majority of people with large local reactions continue to have large local reactions with future stings, not systemic ones.⁴

Warning Signs of Anaphylaxis

Anaphylaxis is the reaction you need to recognize and act on fast. It affects the whole body, not just the sting site, and it can progress from uncomfortable to fatal within minutes. Roughly 3 to 4 percent of people develop this kind of potentially life-threatening systemic reaction to a sting.⁵ Watch for these signs, which typically appear within minutes of the sting but can sometimes be delayed up to an hour:

• Hives or flushing: Widespread red, itchy welts appearing on skin far from the sting site.
• Swelling of the throat, tongue, or lips: A feeling of the throat closing or difficulty swallowing.
• Breathing trouble: Wheezing, chest tightness, or a sense that you cannot get enough air.
• Dizziness or fainting: A sudden drop in blood pressure that makes you feel lightheaded or causes you to pass out.
• Nausea, vomiting, or diarrhea: Gastrointestinal symptoms can be part of systemic anaphylaxis and are sometimes the first sign.
• A sense of impending doom: This sounds vague, but patients consistently describe a sudden overwhelming anxiety that something is very wrong. Take it seriously.

If any of these symptoms appear after a sting, the situation is an emergency. Call emergency services and, if available, administer epinephrine.

Using Epinephrine

Intramuscular epinephrine, delivered through an auto-injector, is the first-line treatment for sting-induced anaphylaxis.⁶⁷ Antihistamines and corticosteroids are useful as add-ons, but they act too slowly to reverse a rapidly progressing reaction. Epinephrine constricts blood vessels (raising blood pressure), relaxes airway muscles (opening breathing passages), and reduces the immune cascade driving the reaction. Nothing else does all three simultaneously.

If you carry an auto-injector, inject it into the outer thigh and hold for several seconds. You can inject through clothing if needed. Then call emergency services even if you feel better, because anaphylaxis can recur hours later in what is called a biphasic reaction. Lying down with your legs elevated helps maintain blood pressure while you wait for help, unless you are vomiting or having severe breathing difficulty, in which case sitting upright is safer.

A common mistake is hesitating to use epinephrine because “the reaction might not be that bad.” Delayed use is one of the leading contributors to poor outcomes in anaphylaxis. Using it when it turns out not to have been necessary produces mild side effects like a racing heart and jitteriness. Not using it when it was needed can be fatal. The risk calculus is straightforward.

Who Is at Higher Risk for Severe Reactions

Some people are more likely to have a dangerous response to a sting. The most significant risk factor is mastocytosis, a condition involving excess mast cells (the immune cells that release histamine). People with mastocytosis are prone to especially severe anaphylaxis from stings.⁸ Older age is also clearly associated with increased risk, and cardiovascular reactions in particular become more common as people age.⁹ Male sex, higher baseline tryptase levels, and a history of a previous systemic reaction are additional risk factors.⁹

Whether certain blood pressure medications such as ACE inhibitors and beta-blockers worsen sting anaphylaxis has been debated for years. Recent data suggest the association may not be as strong as previously thought.⁸ Still, anyone on these medications who has a known venom allergy should discuss it with their doctor, because the theoretical concern is that beta-blockers could blunt the body’s response to epinephrine during an emergency.

When Multiple Stings Become a Medical Emergency on Their Own

Even someone with no allergy at all can be in danger from a large number of stings. This is because beyond a certain volume of venom, the toxicity itself overwhelms the body regardless of immune response. The kidneys are especially vulnerable. Acute kidney injury is a common complication following mass stinging events, typically showing up 24 to 48 hours afterward, driven by a combination of direct venom toxicity and the breakdown products of damaged muscle and red blood cells flooding the renal system.¹⁰

In cases of massive bee attacks, the damage can extend to the liver, pancreas, and lungs. A case study involving a mass stinging event documented acute kidney injury, liver injury, pancreatic injury, and pulmonary edema, requiring multiple rounds of dialysis.¹¹ The threshold for toxic envenomation varies by body weight, which makes children especially vulnerable to mass stinging events. If someone has been stung dozens of times, they need emergency medical evaluation even if they are not showing signs of allergy, because the organ damage from venom toxicity can develop over the next day or two.

Home Remedies That Do Not Work

One of the most persistent folk remedies for bee stings is applying meat tenderizer (papain paste) to the sting site, on the idea that the enzyme breaks down venom proteins. This was tested in a controlled animal study, which found no evidence that papain reduced venom lethality or the size of the skin lesion.¹² A follow-up commentary in a major pediatrics journal confirmed the finding and cautioned against recommending the treatment.¹³

Other common suggestions like applying baking soda paste, toothpaste, or vinegar lack controlled evidence supporting their use. They are unlikely to cause harm, but there is no reason to believe they do anything beyond what a cold compress accomplishes. Tobacco juice, mud, and copper pennies are in the same category: persistent folklore with no scientific backing. Stick with ice, a clean wound, and an over-the-counter antihistamine. Those are the treatments with evidence behind them.

Venom Immunotherapy for People With Known Allergy

If you have had a systemic allergic reaction to a sting, you do not have to spend the rest of your life hoping you never get stung again. Venom immunotherapy, a treatment in which gradually increasing doses of purified venom are injected over months and then maintained for several years, is highly effective. In trials, only about 3 percent of people receiving the therapy had a systemic reaction to a subsequent sting, compared with roughly 40 percent of untreated patients.¹⁴

The protection rates differ somewhat depending on the insect. For wasp venom, immunotherapy provides complete protection in over 90 percent of cases, while for honeybee venom the rate is somewhat lower, in the range of 77 to 84 percent.¹⁵ A meta-analysis pooling several systematic reviews and randomized trials found that the therapy substantially reduced the risk of severe systemic reactions and improved quality of life.¹⁶ Side effects during treatment are common but mostly mild, and no fatalities from the therapy itself have been reported in these studies. The protective effect persists for years after stopping treatment.¹⁵

Successfully completing immunotherapy also has a notable psychological benefit. People who have been re-stung after treatment and did not have a reaction report significantly less anxiety about future stings compared to those who did not receive the therapy or who relapsed.¹⁷ For someone whose outdoor activities, work, or mental health have been constrained by sting fear, this is not a minor benefit.

Why Bees Keep Attacking After the First Sting

If you have ever been stung once and then had several more bees come after you, it was not a coincidence. When a honeybee stings, the venom sac left behind releases alarm pheromone compounds, primarily isopentyl acetate. These chemical signals rapidly recruit other bees from the colony and heighten their aggression toward moving objects.¹⁸ The pheromone does not guide bees directly to the sting location through precise chemical tracking. Instead, it alerts nearby bees and primes them to target anything that is moving.¹⁹

This is why the standard advice is to move away from the area calmly but quickly if you are stung. Running is fine and often necessary. Swatting at bees, on the other hand, creates exactly the kind of rapid movement that alarm-primed bees home in on. If possible, get indoors or into a vehicle. Getting into water is less effective than people think because the bees may wait at the surface.

Stings to the Eye

A bee sting to the cornea is rare but serious. The stinger can physically penetrate the surface of the eye, and the venom causes a cascade of local inflammation, corneal swelling, and infiltration that threatens vision. In one documented case, a patient’s visual acuity deteriorated significantly within two days as corneal edema developed around the retained stinger, requiring surgical removal.²⁰ Among a series of patients with corneal bee stings, nearly half ended up with poor visual outcomes and needed surgery, including corneal transplants and cataract procedures.²¹

If a bee stings you in or near the eye, do not attempt to remove the stinger yourself. Get to an ophthalmologist or emergency room immediately. Prompt removal of the stinger combined with aggressive anti-inflammatory treatment dramatically improves outcomes. In some patients, corneal swelling resolved impressively once the stinger was taken out, while delayed cases progressed to permanent corneal damage and secondary complications like glaucoma.²²

When Pets Get Stung

Dogs are particularly prone to bee encounters because they investigate buzzing insects with their noses and mouths. In mass stinging events, dogs suffer many of the same organ-level consequences that humans do. A retrospective study of 19 dogs that died after Africanized bee attacks found that the head and neck were the most heavily stung areas, and the primary internal damage was to the kidneys, with tubular degeneration and necrosis found in every case.²³ Some dogs had also ingested bees, with stingers found in the digestive tract.

For a single sting, most dogs develop a local swelling, often on the face or paw, that resolves on its own or with a veterinarian-approved antihistamine. But if your dog has been stung multiple times, is vomiting, having difficulty breathing, or showing facial swelling that seems out of proportion to one sting, treat it as an emergency and get to a vet. Dogs can experience anaphylaxis too, and the progression can be just as fast as in humans. Brachycephalic breeds with shorter airways may be at higher risk of breathing complications from swelling around the mouth and throat.