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Dr. Chrysoula I. Liakou MD, PhD
- Treated online: Yes, usually, for local reactions: the sting is classified from photos plus video and antihistamines, steroid cream or a short steroid course prescribed; anaphylaxis, stings inside the mouth or throat, and many stings at once are emergency care, never an online consultation.
- What it is: venom injected by a social wasp, in Europe mainly the common and German wasp and, in the south, hornets and the paper wasp; the smooth stinger is not left behind, unlike a honeybee's barbed sting, and one wasp can sting several times.
- How long: a normal wasp sting reaction settles within 2 to 3 days; a large local reaction keeps growing for 1 to 2 days, can exceed 10 cm, and fades over 5 to 10 days; swelling growing again after day 2 with warmth and pus is infection.
- Anaphylaxis: swelling of the face, lips, tongue or throat, hoarseness, wheeze, difficulty breathing, widespread hives, dizziness or collapse, usually starting within an hour of the sting; it affects a small minority of adults and needs adrenaline, not antihistamines.
- Venom allergy: anyone who has had symptoms beyond the sting area is referred for venom allergy testing, carries an adrenaline auto-injector meanwhile, and can be offered venom immunotherapy, which protects about 95 in 100 people from future reactions.
- Emergency: call 112 immediately for any of the anaphylaxis signs, for a wasp sting inside the mouth or throat, or for feeling unwell after many stings, and use an adrenaline auto-injector at once if one is available.
A wasp sting with swelling of the face, lips, tongue or throat, difficulty breathing, wheeze, dizziness or collapse is anaphylaxis until proven otherwise. Call 112 immediately and use an adrenaline auto-injector if one is available; do not book an online appointment. Stings inside the mouth or throat, and large numbers of stings at once, also need emergency care. Online care is for stings without any of these features.
How do you treat a wasp sting?
For a normal wasp sting, wash the area with soap and water, apply a cold compress for ten minutes at a time, and take a pharmacy antihistamine for itch and swelling; pain settles within hours and swelling within a few days. Wasps leave no sting behind, so there is nothing to remove.[1] The exceptions define themselves quickly: any sign of a body-wide reaction in the first minutes to an hour is a 112 emergency, and swelling that keeps growing for two days, or a sting that becomes more painful late in the week, deserves a doctor’s assessment.
Listen: Wasp Stings Treatment Online
The audio version of this topic from the Mobi Doctor podcast. Open the episode.
What are the signs of anaphylaxis after a wasp sting?
Anaphylaxis is a rapid, body-wide allergic reaction, and wasp venom is one of its classic triggers in Europe. It usually begins within minutes of the sting, almost always within the first hour. Treat any of these as an emergency:[2]
- Swelling of the lips, tongue, throat or face
- Difficulty breathing or swallowing, noisy breathing, wheeze, or a tight chest
- A hoarse voice or a feeling of the throat closing
- Dizziness, faintness, a racing heart, or collapse
- Widespread hives, flushing or itching far beyond the sting
- Sudden nausea, vomiting or cramping stomach pain alongside any of the above
If any of these appear, call 112 immediately. If the person carries an adrenaline auto-injector, use it at once, into the outer mid-thigh, before anything else and without waiting to see whether things worsen; a second dose can be given after about five minutes if there is no improvement. Lie them flat with legs raised, or sitting up if breathing is the main problem, and do not stand them up suddenly. Antihistamines do not treat anaphylaxis; adrenaline does.[2] Everyone who has had a reaction like this, even one that settled, should be referred afterwards for allergy assessment, because venom immunotherapy can substantially reduce the risk of the next sting causing the same emergency, and an auto-injector prescription with training belongs in the meantime.[4]
Is my wasp sting reaction normal?
Almost certainly, and the pattern tells you which kind you have. A normal local reaction is sharp pain, redness and a swollen area a few centimetres across that hurts for hours and settles over one to a few days.[1] A large local reaction can keep swelling for a day or two before settling. Neither pattern is an allergy emergency; the emergency signs are the body-wide ones above.
Normal local reaction
Immediate burning pain, a pale bump with a red flare, swelling up to a few centimetres, itching as it settles. Self-care is enough: cold, antihistamines, simple pain relief.
Large local reaction
In about one person in ten, the swelling keeps growing for one to two days, can exceed ten centimetres, may blister, and takes up to a week or more to fade.[1][5] A sting on the forearm can swell past the elbow and still be a large local reaction rather than anaphylaxis: the border is crossed only when symptoms appear beyond the stung area. Large local reactions are uncomfortable rather than dangerous, respond to antihistamines and sometimes a short course of steroid tablets after assessment, and only modestly raise the risk of future systemic reactions. They are exactly the reactions an online consultation manages well, because size, spread and blistering all show on camera.
Systemic reaction
Any symptoms away from the sting, from widespread hives to throat tightness, belong to the emergency pathway above, followed by allergy referral. No exceptions for mild-looking cases: systemic reactions can escalate between stings.[4]
What about multiple stings, or stings in the mouth?
Many stings at once, from disturbing a nest, can cause a toxic reaction from the sheer venom load: vomiting, headache, fever and feeling generally unwell, even in people with no allergy at all. Children, older adults and anyone stung tens of times need medical assessment the same day, in person.[1] Stings inside the mouth or throat, usually from a wasp in a drink can or glass, are an emergency regardless of allergy, because local swelling can threaten the airway: call 112, and sucking an ice cube while help arrives limits the swelling. Late-summer terraces are the classic setting, which is why checking your glass is the least glamorous and most effective wasp advice there is.
Wasp sting or bee sting?
Wasps sting smoothly and can sting repeatedly, leaving no sting behind, and they keep their aggression late into summer and autumn as colonies peak. A honeybee stings once and leaves a barbed sting with a venom sac pumping in the skin: scrape it out sideways immediately with a fingernail or card edge rather than pinching it with tweezers, which squeezes in more venom.[1][5] Medically, the reactions and their treatment are the same, and a person allergic to one venom is not automatically allergic to the other; allergy testing sorts that out for anyone who has had a systemic reaction.[4]
How an online consultation helps with wasp stings
- The reaction classified fast: normal, large local or infected each get a different plan, and the distinction shows well on photos taken a day apart.
- Treatment for big reactions: after assessment, the doctor can prescribe antihistamines, stronger topical steroids or, case by case, a short steroid course for a large local reaction.
- Infection sorted from inflammation: most “infected” stings are late-peaking inflammation; the doctor reads the timeline and spares you antibiotics you do not need.
- The allergy conversation started: if your history suggests systemic reactions, the doctor sets up the referral for venom allergy testing and talks through auto-injectors honestly.
📷 Before your appointment: photograph the sting in daylight with a coin or ruler for scale, and again a few hours later if the swelling is changing. For a suspected infection, a shot that captures the edge of the redness helps the doctor track whether it is advancing or retreating.
What the doctor checks in an online wasp sting consultation
The assessment is structured, and the first questions are safety questions. In a wasp sting consultation, the doctor will typically check:
- Any systemic features, first: breathing, throat, voice, dizziness and rash beyond the sting, now or at any point since the sting; anything positive reroutes you to emergency care.
- The timeline: when you were stung and how the swelling has behaved since, because large local reactions peak at one to two days while infection builds later.[1]
- Size and site: measured against a coin or ruler in your photos; stings near the eye or on the hands and feet earn closer follow-up.
- Signs of infection: redness expanding after 48 hours, increasing pain, warmth, pus or fever, which are uncommon but treatable.[3]
- Your sting history: previous large or systemic reactions, which change both today’s advice and whether allergy referral is due.[4]
- Health background and medicines: heart and blood pressure medicines, pregnancy and other conditions that shape treatment choices.
Which wasp sting treatment might the doctor recommend?
Treatment follows the reaction type. This is the decision framework the doctors use, aligned with European and UK guidance:[1]
Swipe sideways to compare →
| Presentation | Likely first step | Suitable for online care? | When referral or in-person care is needed |
|---|---|---|---|
| Normal local reaction: pain, redness, swelling of a few centimetres | Cold compress, pharmacy antihistamine, simple pain relief | Usually yes, if reassurance is wanted | Not usually needed |
| Large local reaction: swelling beyond 10 cm, peaking at 24–48 hours | Regular antihistamine; short oral steroid course considered after assessment | Usually yes | Swelling near the eye or throat, or still advancing after 48 hours |
| Suspected infected sting: worsening after 48 hours, pus or fever | Assessment for infection; antibiotics only if there are bacterial signs | Often yes, with clear photos | Red streaking, fever with shivering or rapid spread need same-day in-person care |
| Multiple stings, or a sting in the mouth or throat | Emergency or same-day in-person assessment | No | Call 112 for mouth or throat stings or feeling unwell after many stings |
| Any systemic reaction: face or throat swelling, wheeze, faintness, collapse | Adrenaline and emergency treatment, then allergy referral | No | Call 112 immediately; specialist follow-up afterwards[2] |
Not sure which row is your sting? A doctor can tell you in one consultation.
See available times →Treatment options for wasp stings
What you can do yourself
Wash the sting, cool it with a cold compress or wrapped ice for ten minutes at a time, and elevate a stung limb to limit swelling. A non-drowsy pharmacy antihistamine such as cetirizine helps itch and swelling, paracetamol or ibuprofen covers the pain, and one percent hydrocortisone cream can calm the site over the following days. Remove rings and tight watches early if a hand or arm was stung. Vinegar, bicarbonate and other kitchen chemistry do not neutralise wasp venom; cold and time do the real work.[1]
Prescription treatment
A prescription is never issued without a consultation; the doctor classifies the reaction first. Large local reactions may earn prescription antihistamine strategies, stronger topical corticosteroids, or a short course of oral steroids decided case by case.[1] Genuinely infected stings receive an antibiotic course matched to local guidance; the stewardship line is that antibiotics are only prescribed when there are real signs of bacterial infection, such as redness spreading after 48 hours with pus or fever, and most swollen stings are inflammation rather than infection, and spreading skin infection is covered on the cellulitis page.[3] Adrenaline auto-injectors are prescribed for people with systemic reactions as part of a proper allergy plan, ideally alongside specialist assessment for venom immunotherapy, which is the treatment that actually reduces the danger of future stings.[4]
How can I avoid wasp stings?
Wasps sting to defend a nest or themselves, so most prevention is about not triggering defence. Stay still or move away slowly rather than swatting; a crushed wasp releases alarm chemicals that recruit others. Keep food and sweet drinks covered outdoors in late summer and autumn, when colonies are at their largest and hungriest, and never drink from an opened can you cannot see into. Check fruit before picking it up in the garden, wear shoes on grass, and leave nest removal to professionals rather than improvising with a broom and optimism. People with known venom allergy should keep their adrenaline auto-injector within reach outdoors in wasp season, not in a bag at home.
When wasp stings are treated online, and when you need in-person care
Treated online: painful or itchy local reactions that need more than pharmacy care; large local reactions, including short steroid courses where appropriate after assessment; stings with possible early infection that clear photos can settle; and post-sting questions, from how long swelling should last to whether a previous reaction warrants allergy testing. If what stung you turns out to have been an ant or a biting fly, the assessment simply continues; identification is part of the job.
In-person care: any systemic reaction, past or present, gets emergency care first and a referral for venom allergy testing and immunotherapy assessment afterwards, which the doctor arranges rather than replaces; multiple stings with feeling unwell, stings in the mouth or throat, and stings with airway-side swelling go to emergency or same-day in-person care; and rapidly spreading redness with fever needs in-person examination the same day. In those cases the consultation buys you the right pathway, not a cream. Wasp stings sit alongside the other bites and stings the doctors assess online.
When to get in-person care
Call 112 immediately if a wasp sting is followed by swelling of the face, lips, tongue or throat, difficulty breathing or swallowing, wheeze, a hoarse voice, dizziness, widespread hives, vomiting or collapse: these are signs of anaphylaxis. Use an adrenaline auto-injector at once if one is available, and lie the person flat with legs raised while waiting for help, or sitting up if breathing is difficult. Also treat stings in the mouth or throat, and feeling unwell after many stings at once, as emergencies. Get same-day in-person care for spreading redness with fever after the first 48 hours.
How Mobi Doctor works
- Book a time that suits you: open daily 7am–11pm CET. You can see a doctor over video, usually within 15 minutes. No subscription, exact price up front.
- Speak to a licensed doctor about wasp stings: a private video call: you describe what you feel, the doctor asks what matters, and you agree the right plan together.
- Leave with your plan: everything agreed before you hang up: your plan, and a prescription to use at a pharmacy near you where medication is clinically right for you. If your doctor decides you need to be seen in person, you get a full refund.
No sign-up needed
Not sure it’s a wasp sting? Tick every symptom you have to see each condition page that mentions it. It finds the right page, not a diagnosis: a doctor gives you that on a video call.
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Not sure this is the right page? Look up any symptom in the full symptom checker, or book and describe it to a doctor.
Frequently asked questions about wasp stings
What is in a wasp sting, and what does a normal reaction look like?
A wasp sting injects a small dose of venom containing enzymes, histamine-releasing peptides and allergenic proteins. A normal reaction to a wasp sting is immediate sharp pain, then a red, swollen, itchy area of 1 to 5 cm around a central puncture that peaks within hours and settles over two to three days. Unlike a bee, a wasp leaves no stinger behind and can sting again.
How do you treat a wasp sting?
Treat a wasp sting by washing it with soap and water, holding a cold compress on it for 20 minutes, raising the stung limb, taking a non-drowsy antihistamine for itch and swelling, applying hydrocortisone cream, and using paracetamol or ibuprofen for pain. Do not scratch, squeeze or apply vinegar, bicarbonate or mud. A sting that is still growing after 48 hours needs a doctor.
Can an online doctor prescribe wasp sting treatment in Europe?
Yes, after a consultation. A prescription is never issued without one: the doctor classifies your reaction to the wasp sting from photos and video first, then can prescribe antihistamines, a steroid cream, a short steroid course for a large local reaction or, where a sting has become infected, antibiotics, with the prescription sent to a pharmacy near you. Anyone with symptoms beyond the sting is referred for allergy testing.
How long does wasp sting swelling last?
A normal wasp sting reaction settles within two to three days, with the worst pain in the first hours. Large local reactions keep growing for one to two days, can pass ten centimetres, and take five to ten days to fade. Swelling that starts enlarging again after day two, with warmth, pus or fever, points to infection rather than venom and needs assessment.
When should I go to hospital for a wasp sting?
Immediately, by 112, for any swelling of the face, lips, tongue or throat, difficulty breathing, wheeze, dizziness, widespread hives or collapse after a wasp sting, for stings inside the mouth or throat, which can swell the airway, and for feeling unwell after many stings at once. These emergencies are treated with adrenaline, not with a video call or an antihistamine at home.
What are the signs of anaphylaxis after a wasp sting?
Anaphylaxis after a wasp sting usually starts within an hour and includes hives or flushing spreading well beyond the sting, swelling of the lips, tongue, eyelids or throat, a hoarse voice, tightness in the throat or chest, wheeze or difficulty breathing, a racing heart, dizziness, vomiting, a sense of dread, or collapse. Any one of these means 112 and an adrenaline auto-injector if available.
Does vinegar help a wasp sting?
No. The idea that vinegar neutralises alkaline wasp venom is kitchen chemistry that does not survive contact with real skin, where the venom is already deep in the tissue within seconds. Cold compresses, antihistamines, hydrocortisone cream and simple pain relief are what reduce the swelling and itch of a wasp sting; bicarbonate for bee stings is the same myth in reverse.
Do wasps leave a sting in your skin, and how do I tell a wasp sting from a bee sting?
Wasps do not leave a sting in the skin: they have a smooth stinger and can sting several times, so there is nothing to pull out afterwards. Honeybees leave a barbed sting with a venom sac attached, which should be scraped out sideways with a card at once. The reactions look alike; the insect and the presence or absence of a stinger are the clues.
Will I react badly to my next wasp sting?
A large local reaction only modestly raises the chance of a future body-wide reaction, and most people with big swellings never develop anaphylaxis. Anyone who has had symptoms beyond the sting area, such as hives elsewhere, faintness or breathing trouble, should be tested for venom allergy, because venom immunotherapy prevents future reactions in about 95 in 100 people, and should carry an adrenaline auto-injector meanwhile.
What about multiple wasp stings, or a sting in the mouth?
Dozens of wasp stings at once deliver enough venom to cause vomiting, headache, fever and, rarely, kidney or muscle damage even without allergy, so feeling unwell after a swarm attack is emergency care. A wasp sting inside the mouth or throat, usually from a wasp in a drink can, can swell the airway within an hour: suck ice, and go to emergency care rather than waiting to see.
How can I avoid wasp stings?
Avoid wasp stings by keeping food and sweet drinks covered outdoors and checking cans and straws before drinking, not swatting at a wasp, which triggers alarm scent and more stings, moving away calmly, wearing shoes on grass, avoiding strong perfumes and bright floral clothing, and having nests near doors removed professionally. Late summer, when colonies peak and food runs short, is the riskiest season.
Are wasp stings different in pregnancy or for children?
In pregnancy, a wasp sting is treated with cold compresses, hydrocortisone cream and the antihistamines the doctor confirms are suitable, and anaphylaxis is treated with adrenaline exactly as outside pregnancy because the danger to both lies in not treating it. Children get more stings and more large local reactions; Mobi Doctor sees adults only, and a child with symptoms beyond the sting needs emergency care.
- Insect bites and stings (Clinical Knowledge Summary), NICE, National Institute for Health and Care Excellence, 2024.
- Anaphylaxis: assessment and referral after emergency treatment (CG134), NICE, National Institute for Health and Care Excellence, 2020.
- Cellulitis and erysipelas: antimicrobial prescribing (NG141), NICE, National Institute for Health and Care Excellence, 2019.
- Guidelines on venom allergy, venom immunotherapy and anaphylaxis, EAACI, European Academy of Allergy and Clinical Immunology, 2025.
- Bee and wasp stings, DermNet, DermNet New Zealand Trust, accessed August 2026.
- Insect bites and stings, NHS, National Health Service (UK), reviewed June 2023.
This page is for information only and is not a substitute for a medical consultation. Guideline links are provided for transparency; treatment decisions are made with your doctor.
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Read article →Speak to a doctor about wasp stings over video, usually within 15 minutes
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