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Dr. Chrysoula I. Liakou MD, PhD
- Treated online: Yes, usually. Midge bites are graded from photos plus video, with a non-drowsy antihistamine, a steroid cream for large local reactions or, for an infected bite, antibiotics prescribed; face or throat swelling or breathing difficulty after bites is a 112 call.
- What it is: a bite from a female biting midge (Culicoides), which cuts the skin to feed; midges swarm in their thousands at dawn and dusk near lochs, bogs and damp woodland, and a wind above about 10 km/h grounds them.
- How long: the itch of a midge bite peaks on day 1 to 2 and most bites settle in 3 to 7 days; a large local reaction takes a week or more to flatten, and a bite still growing after 48 hours is reacting abnormally or infected.
- Midge or mosquito: midges leave dozens of small bites in clusters on exposed skin after an evening outdoors; mosquitoes bite singly, leave larger weals, bite through thin fabric and whine at night.
- Season: the Highland midge season runs from late May to September, worst in July and August; northern Scotland, western Ireland, Scandinavia and the Alps have the heaviest swarms, with smaller species across the rest of Europe.
- Emergency: call 112 if, after midge bites, the face or throat swells, breathing becomes difficult, hives spread across the body with faintness, or the person collapses.
Midge bites are miserable rather than dangerous. Call 112 instead of booking if bites are followed by swelling of the face, lips, tongue or throat, difficulty breathing, widespread hives with faintness, or collapse. Redness spreading fast with fever needs same-day in-person care.
What do midge bites look like?
Midge bites appear as clusters of small, red, intensely itchy bumps, often a dozen or more at once on skin that was exposed outdoors: ankles, wrists, the hairline, ears and the back of the neck. Each bite is usually smaller than a mosquito bite, but the itch is often worse, and in people who react strongly the bumps merge into swollen, hot patches or form small blisters.[2] The number is the giveaway: midges attack in swarms, so where a mosquito leaves one weal, midges leave a constellation. Bites usually calm over three to seven days, with scratched or blistered bites taking longer.[4]
Listen: Midge Bites Treatment Online
The audio version of this topic from the Mobi Doctor podcast. Open the episode.
Can midge bites cause an allergic reaction?
Yes. Every midge bite involves a small allergic-type response to midge saliva, which is why it itches, and some people go further, developing large local swellings or widespread reactions. A true midge bite allergic reaction severe enough to be dangerous is rare, but it exists, and knowing the four levels helps you match your response to what is happening.[1] Reactions also differ between people and seasons, so last year’s mild bites do not guarantee this year’s.
Normal local reaction
Itchy red bumps that peak over the first day or two and fade within a week. Annoying, completely expected, and safely managed with self-care: cold compresses, antihistamines and hydrocortisone cream.
Large local reaction
In sensitised people, single bites swell into hot, red, itchy plaques several centimetres across, sometimes with blistering, peaking around 24–48 hours and lasting up to a week or more. Uncomfortable and alarming to look at, but still a local reaction; it responds to regular antihistamines and prescription-strength topical steroids after assessment, and it is the level of reaction an online consultation handles particularly well.
Widespread hives
Itchy raised weals appearing beyond the bitten skin, on areas that were never bitten, mean histamine is being released more widely. This deserves a same-day medical review even when breathing is normal; treatment is usually antihistamine-based, and the hives page explains the condition itself.
Anaphylaxis
Extremely rare with midges, but it is the level everyone should be able to recognise: swelling of the face, lips, tongue or throat, difficulty breathing or swallowing, wheeze, dizziness, faintness or collapse within minutes to an hour of bites. That is a 112 emergency, not an online appointment, and adrenaline, not antihistamines, is the treatment that saves lives.[3]
Where and when do midges bite?
Biting midges thrive wherever damp ground, still air and warm summers meet. Scotland’s Highlands and west coast are the famous example: the Highland midge emerges from boggy ground in numbers that can define a holiday, typically from late spring to early autumn. But midges are a European phenomenon, not a Scottish one: Scandinavian lakes and forests, Alpine valleys, Irish moorland, coastal marshes from the Atlantic to the Baltic, and river deltas across the continent all breed them. They swarm at dawn and dusk, on still, humid, overcast days, and near standing water and long vegetation; strong sunshine dries them out and even a light breeze grounds them, which is why the windy side of a beach is bite-free while the sheltered picnic spot is not. Only the females bite, taking a blood meal to mature their eggs, and unlike mosquitoes they cannot bite through fabric, so covered skin genuinely is safe skin. Midges in Europe do not transmit disease to humans; the misery they cause is real but purely skin-deep.[2]
How an online consultation helps with midge bites
- The reaction graded properly: normal bites, large local reactions, scratched-open patches and early infection each need a different plan, and the difference shows in photos taken a day apart.
- Relief that actually works: after assessment, the doctor can prescribe stronger topical steroids and the right antihistamine strategy instead of another round of whatever the supermarket had.
- Infection caught early: heavily scratched midge bites are a classic route to skin infection; the doctor checks your photos against the 48-hour rule and treats what needs treating.
- A plan for the season: repellents, timing and clothing advice matched to where the midges keep finding you, whether that is a Scottish glen, a lakeside cabin or your own garden.
📷 Before your appointment: take two daylight photos: a sharp close-up of the worst area with a coin or ruler for scale, and a wider shot showing the spread of bites. If swelling is growing, photograph it morning and evening; the sequence tells the doctor whether it is peaking or advancing.
What the doctor checks in an online midge bite consultation
The assessment is structured, and the pattern does most of the talking. In a midge bite consultation, the doctor will typically check:
- The bite pattern and count: clustered bites on exposed skin point to midges; lines under clothing or bites appearing overnight indoors point elsewhere.
- Where you were bitten: boggy ground, lakesides, coastal marsh or garden at dusk, and in which region, which frames the season and the culprit.
- The reaction level: normal bumps, large local plaques, blistering, or any weals beyond the bitten skin, graded from your photos.[1]
- The 48-hour trend: settling, peaking or spreading, which is the main line between reaction and infection.
- Signs of infection: spreading redness, warmth, pus, swollen glands or fever, checked against your timeline.
- Any systemic features: hives elsewhere, swelling away from bites, wheeze or faintness, which change the urgency entirely.
- Health background and medicines: eczema, diabetes, immune-suppressing treatment and pregnancy, which change infection risk and which treatments the doctor recommends.
Which midge bite treatment might the doctor recommend?
Treatment follows the reaction level. This is the decision framework the doctors use, aligned with European and UK guidance on insect bites:[1]
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| Presentation | Likely first step | Suitable for online care? | When referral or in-person care is needed |
|---|---|---|---|
| Clusters of itchy bumps, settling over days | Cold compress, pharmacy antihistamine, hydrocortisone cream | Usually yes, if reassurance or identification is wanted | Not usually needed |
| Large hot swollen plaques or blistered bites | Regular oral antihistamine plus prescription-strength topical steroid after assessment | Usually yes | Swelling still advancing after 48 hours despite treatment |
| Widespread hives beyond the bitten skin | Same-day review and antihistamine-based treatment | Often yes, same day | Any breathing difficulty, throat tightness or faintness is a 112 emergency |
| Redness spreading after 48 hours, pain, 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 |
| Face or throat swelling, wheeze, collapse | Emergency treatment for anaphylaxis | No | Call 112 immediately[3] |
Not sure which row is your reaction? A doctor can tell you in one consultation.
See available times →Treatment options for midge bites
What you can do yourself
Wash the bitten skin, cool it with a cold compress or a cloth-wrapped ice pack for ten minutes at a time, and take a non-drowsy pharmacy antihistamine such as cetirizine or loratadine; taken regularly during a midgy week rather than after each flare, it works noticeably better. One percent hydrocortisone cream calms individual bites, and keeping nails short limits the damage when you scratch in your sleep.[4] Leave blisters intact. What does not help: antiseptic creams on unbroken skin, and folk remedies from bog myrtle to vinegar, which have charm but no evidence.[1]
Prescription treatment
A prescription is never issued without a consultation; the doctor grades the reaction first. Large local reactions usually earn a more potent topical corticosteroid and a structured antihistamine plan, sometimes with a sedating antihistamine at night while the itch peaks. Widespread hives are treated with regular antihistamines and reviewed. Infected bites get an antibiotic course matched to local guidance, and the stewardship line applies: antibiotics are only prescribed when there are genuine signs of bacterial infection, such as spreading redness after 48 hours, pus or fever, because they do nothing for allergic swelling or itch.[1] For people whose every summer is defined by dramatic reactions, the doctor can also discuss whether formal allergy assessment adds anything, honestly including when it does not.[3]
How can I prevent midge bites?
Midge prevention is about stacking small advantages, because no single measure stops a determined swarm:
- Repellent on every exposed patch: DEET or icaridin products are the evidence-backed core; reapply as directed, especially after sweating or swimming.[1]
- Cover up, tightly woven: midges cannot bite through fabric, so long sleeves, trousers tucked into socks and a buff around the neck remove most of the target area.
- A fine-mesh head net: in serious midge country, a head net over a brimmed hat is the difference between an evening outdoors and a retreat indoors; standard mosquito mesh is too coarse, so look for midge-proof mesh.
- Use wind and sun: midges are grounded by breeze and strong sunshine. Choose the windy beach over the sheltered hollow and the open ridge over the still forest edge at dusk.
- Time your day: dawn and dusk are peak biting hours; midday is usually manageable, and swarms fade quickly once you move away from breeding ground.
- At home: fine window mesh in bedroom windows and dealing with permanently waterlogged corners of the garden reduce the nightly supply.
Travelling to midge country elsewhere in Europe? Pack repellent and any antihistamine that works for you rather than hunting pharmacies on arrival, and if bites still get the better of you mid-trip, an online consultation works from a Highland cottage as well as it does from home.
When midge bites are treated online, and when you need in-person care
Treated online: itchy, swollen or blistered midge bites needing more than pharmacy care; large local reactions that need grading and a proper treatment plan; widespread hives without breathing symptoms; bites with early signs of possible infection that clear photos can settle; and prevention planning for a season or a trip. If the bites turn out to be from gnats or mosquitoes, the plan simply adjusts; the assessment is the same.
In-person care: any features of anaphylaxis go to 112 before anything else; rapidly spreading redness, red streaking or fever with shivering needs same-day in-person assessment; bites around the eye with swelling that closes the lid need an in-person check; and people with previous serious systemic reactions to bites should carry an emergency plan agreed with an allergy specialist, which the doctor helps arrange rather than replace. Midge bites sit alongside the other bites and stings the doctors assess online.
When to get in-person care
Call 112 immediately if bites are followed by swelling of the face, lips, tongue or throat, difficulty breathing or swallowing, wheeze, widespread hives with faintness, or collapse: these are signs of anaphylaxis, which is very rare with midges but always an emergency.[5] Get same-day in-person care for a red streak spreading from a bite, fever with shivering, or redness expanding by the hour.
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 midge bites: 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 midges? 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.
Tap the body — an area or a point — to browse symptoms anywhere
Similar symptoms, different condition? Mosquito Bites can start the same way. Compare them, or look up any other symptom in the full symptom checker.
Frequently asked questions about midge bites
What are midge bites, and what do they look like?
Midge bites are the marks left by biting midges, tiny flies that swarm at dawn and dusk and cut the skin to feed. They look like clusters of small red bumps, often dozens at once, on the scalp, neck, wrists, ankles and any skin that was uncovered, each intensely itchy and sometimes topped by a blister; in sensitised people a single midge bite can swell into a hot, red plaque.
Can an online doctor prescribe midge bite treatment in Europe?
Yes, after a consultation. A prescription is never issued without one: the doctor grades your reaction to midge bites from photos and video first, then can prescribe a non-drowsy antihistamine, a prescription-strength steroid cream or, where there are signs of bacterial infection, antibiotics, with the prescription sent to a pharmacy near you.
How long do midge bites last?
Most midge bites settle within three to seven days, with the itch peaking in the first day or two. Large local reactions can take a week or more to flatten, blisters leave a dark mark for weeks, and midge bites that have been scratched open or infected last longer. A bite that is still enlarging after 48 hours, or bites with hives elsewhere on the body, need a doctor.
Why do midge bites swell up so much on me?
Midge bites swell because sensitised skin answers each bite with an exaggerated allergic-type response to midge saliva, not an infection. Reactions vary enormously between people: a hot, red, itchy plaque several centimetres across is a large local reaction, uncomfortable but not dangerous, and it responds to antihistamines and steroid cream; many people calm down after several seasons of exposure.
What is the difference between midge bites and mosquito bites?
Midges attack in swarms and leave clusters of small bites on exposed skin, usually at dawn or dusk near water or boggy ground, and you rarely feel the individual bite. Mosquitoes bite singly, leave larger individual weals, can bite through thin fabric, and whine audibly at night. Both itch for days, and both respond to the same antihistamines and creams.
Do midges in Scotland carry disease?
No. Highland midges, like other European midges, do not transmit any disease to humans. Midge bites can be numerous and intensely itchy, and scratched bites can become infected, but the bite itself carries no infection. Midges do spread bluetongue virus between sheep and cattle, which is a farming problem rather than a human one.
When should I worry about a midge bite reaction?
Get medical help promptly for hives spreading beyond the bitten skin, redness that keeps expanding after 48 hours, pus, or fever after midge bites. Call 112 immediately for swelling of the face or throat, difficulty breathing, wheeze or faintness after bites, which are signs of anaphylaxis, though it is very rare with midges. Everything milder suits an online consultation.
What can I do at home for midge bites?
At home, cool midge bites with a cold compress for 20 minutes, apply hydrocortisone cream twice a day, take a non-drowsy antihistamine, keep nails short and bites covered if you scratch in your sleep, raise a swollen limb, and take paracetamol for painful swelling. Avoid hot showers, which worsen itch, and skip vinegar, bicarbonate and essential oils, which irritate midge-bitten skin.
How can I prevent midge bites?
Prevent midge bites with a DEET or icaridin repellent on exposed skin, long sleeves, trousers and a head net at dawn and dusk, camping on breezy high ground rather than by still water, keeping tent doors closed, choosing light clothing, and timing walks for the middle of the day or windy weather, since midges cannot fly in a breeze. Citronella candles and ultrasonic devices do little.
When is midge season, and where are midges worst?
Midge season in the Scottish Highlands runs from late May to September and peaks in July and August, with the worst swarms in the west and in warm, still, overcast weather. Western Ireland, Scandinavia, the Alps and damp woodland across Europe have their own species. Midge forecasts based on weather and trap counts are published for Scotland and are worth checking before a trip.
Are midge bites treated differently in pregnancy or for children?
In pregnancy, midge bites are treated with cold compresses, hydrocortisone cream and the antihistamines the doctor confirms are suitable, and DEET repellent is considered acceptable. Children swell more, blister more and scratch more, so infected midge bites are commoner; Mobi Doctor sees adults only, and a child with spreading redness or fever after bites is seen by a local doctor.
Can midge bites become infected?
Yes, but only through scratching: broken skin lets bacteria in, and an infected midge bite shows redness spreading after 48 hours, increasing pain and warmth, pus or honey-coloured crusts, sometimes with fever or swollen glands. Early infection is treated with an antibiotic cream or tablets; a hot, spreading patch with fever needs in-person care that day.
- Insect bites and stings (Clinical Knowledge Summary), NICE, National Institute for Health and Care Excellence, 2024.
- Arthropod bites and stings, DermNet, DermNet New Zealand Trust, 2023.
- Guidelines on anaphylaxis and insect allergy, EAACI, European Academy of Allergy and Clinical Immunology, 2025.
- Insect bites and stings, HSE, Health Service Executive Ireland, 2024.
- Anaphylaxis (severe allergic reaction), HSE, Health Service Executive Ireland, 2025.
- 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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