Most bee stings cause pain, redness, and swelling that resolve on their own within a few hours to a few days. You need emergency care if you develop symptoms beyond the sting site, such as hives spreading across your body, difficulty breathing, swelling in your throat or tongue, or dizziness. Outside of emergencies, several other situations still warrant a doctor’s visit, from signs of infection days later to stings in dangerous locations like the mouth or near the eye.
Call 911 for These Symptoms
Anaphylaxis is the most dangerous possible reaction to a bee sting, and it can progress from mild to life-threatening within minutes. It typically begins with skin symptoms like widespread hives, itching, or flushing, then escalates. The symptoms that signal a true emergency include swelling of the throat, lips, or tongue, difficulty breathing or swallowing, wheezing, a weak or rapid pulse, dizziness, confusion, and loss of consciousness. A sudden drop in blood pressure can lead to cardiac arrest if untreated.
If you carry an epinephrine auto-injector, use it immediately and still call 911. Anaphylaxis can return after the first dose wears off, so hospital monitoring is necessary even if you feel better.
Normal Reactions vs. Large Local Reactions
A normal bee sting causes a red, swollen area less than 5 centimeters (about 2 inches) across. It hurts, it might itch, and it fades within a day or two. This doesn’t need medical attention. Ice, over-the-counter pain relievers, and antihistamines are enough.
A large local reaction extends well beyond 5 centimeters, sometimes reaching 10 or 15 centimeters across. The swelling can worsen over 24 to 48 hours and take up to a week to fully resolve. Large local reactions are not the same as anaphylaxis since they stay localized to the sting area. They’re uncomfortable but not typically dangerous. However, if the swelling is severe enough to limit movement of a joint, or if it keeps expanding after 48 hours, checking in with a doctor is reasonable.
Stings in the Mouth, Throat, or Near the Eye
Where you get stung matters as much as how your body reacts. A sting inside the mouth or throat is a medical emergency regardless of whether you’re allergic. The normal local swelling that would be harmless on your arm can obstruct your airway when it happens in your throat or on your tongue. Case reports describe patients developing choking sensations, voice changes, drooling, and respiratory distress within minutes of an oropharyngeal sting. Even without an allergic reaction, the tissue inflammation alone can be life-threatening in a confined airway.
Stings on or very near the eye also deserve prompt medical attention. Bee venom contains compounds that break down cell membranes and damage proteins in the eye. A sting to the cornea can cause lasting damage including corneal swelling, cataracts, and glaucoma. Some patients in published case series required corneal transplant surgery or cataract removal after a single sting. If you’re stung on the eyelid, the surface of the eye, or the area immediately surrounding it, see a doctor the same day.
Signs of Infection Days Later
A bee sting that seemed fine at first can become infected over the following days. The key distinction is timing: allergic reactions happen within minutes to hours, while infections develop over two to five days. Watch for increasing redness that spreads outward from the sting (especially red streaks), warmth around the area, worsening pain rather than improving pain, pus or drainage, fever, and chills.
These are signs of cellulitis, a bacterial skin infection that can spread rapidly. If you notice a swollen, expanding rash with fever, seek emergency care. If the rash is growing but you don’t have a fever, see a healthcare provider within 24 hours. Infections from bee stings are treatable with antibiotics, but they need to be caught early.
Delayed Allergic Reactions
Not all allergic reactions happen immediately. A condition called serum sickness can develop days to weeks after a sting. Symptoms include a general feeling of illness or fatigue, skin rash or hives, fever, joint pain, and swollen lymph nodes. It’s uncommon with bee stings, but if you develop these vague, flu-like symptoms in the days following a sting, the sting itself may be the cause. Serum sickness can lead to complications including kidney injury and blood vessel inflammation if untreated, so it’s worth seeing a doctor if this pattern fits.
Multiple Stings at Once
Getting stung many times in a single incident introduces a different risk: a toxic venom reaction. This isn’t an allergic response. It’s a direct poisoning effect from the volume of venom. The general threshold is that an average person can tolerate roughly 10 stings per pound of body weight, meaning an adult could theoretically survive over 1,100 stings while a small child could be in danger from far fewer. In practice, you don’t need to be anywhere near those numbers to feel seriously ill. If you or your child received dozens of stings, seek medical evaluation even without obvious allergic symptoms. Nausea, headache, fever, and muscle breakdown can all result from high venom loads.
Following Up After a Severe Reaction
If you’ve had any systemic reaction to a bee sting, whether it was full anaphylaxis treated in an emergency room or a milder episode with hives spreading beyond the sting site, you should follow up with an allergist. Allergy testing can confirm whether you’re sensitized to bee venom, and if you are, venom immunotherapy is highly effective at preventing future anaphylaxis. Even if you managed a past reaction without going to the ER, mention it to your doctor so you can get a referral for testing and, if appropriate, a prescription for an epinephrine auto-injector.
First Aid That Actually Helps
For a normal sting you’re treating at home, the single most important step is removing the stinger quickly. Honeybees leave their stinger embedded in the skin, and it continues pumping venom for several seconds after the sting. For years, people were told to scrape it out with a credit card rather than pinch it, to avoid squeezing more venom in. Research has since shown this doesn’t matter. A systematic review of the evidence found no significant difference in reaction size between scraping and pulling. What did matter was speed. The longer the stinger stayed in, the larger the reaction. So pull it out, scrape it out, flick it out, whatever gets it out fastest.
After removing the stinger, wash the area with soap and water, apply ice to reduce swelling, and take an antihistamine if itching is bothersome. Keep the area clean over the next few days and watch for the infection signs described above.