You come in from the garden and spot three bumps behind one knee. By the 2am wake-up, your toddler is scratching them raw. Here is what actually matters when the bites show up:
- Wash, cool, soothe. Soap and water, a cool compress, and an age-appropriate anti-itch product handle almost every bite.
- No repellent under 2 months. Use a mosquito net over the pram and light long clothing instead of chemicals on tiny skin.
- From 2 months, DEET around 10–30% is safe and effective. A higher percentage lasts longer, it does not work better.
- The rare emergency is fast. Swelling of the face or throat, trouble breathing, or widespread hives means call 112 now.
Most insect bites in children are itchy, harmless bumps that fade within a few days. A bite is one of the most common reasons a parent panics over something that almost never becomes serious. This guide on insect bites and stings in children walks through prevention, treating the bite, choosing a safe repellent, and the small handful of signs that mean stop reading and call for help. Calmly, because nearly all of it ends with a bump and a cranky afternoon.
Quick reference
| Situation | What it usually is | What to do |
|---|---|---|
| Mosquito bite, itchy red bump | Harmless, settles in days | Wash, cool compress, anti-itch product, short nails |
| Bee or wasp sting | Painful, local swelling | Remove stinger, cool compress, watch the next hour |
| Tick attached to skin | Needs prompt removal | Fine tweezers, grip close to skin, pull straight out |
| Spreading redness, warmth, pus, fever | Possible infection | See a doctor (not emergency) |
| Face/throat swelling, breathing trouble | Severe allergic reaction | Call 112 immediately |
How to prevent bites in the first place
Prevention beats treatment, and most of it has nothing to do with chemicals. Mosquitoes breed in standing water, so the CDC puts emptying it first: tip out anything that holds rain or hose water near where your child plays. The bucket by the terrace. The saucer under a flowerpot. The bottom of a forgotten paddling pool.
Dress for it. Light, loosely woven long sleeves and trousers in the evening cover the skin mosquitoes go for, and pale colors attract fewer of them than dark ones. For a baby in a pram, a fine mosquito net draped over the top is the single most useful thing you can own. It works while they sleep, asks nothing of you, and touches no skin.
Time it. Mosquitoes are hungriest at dawn and dusk. If you can shift the walk or the garden play into the middle of the day and keep the long evening outings shorter, you have already cut the number of bites without applying anything at all. The same shaded, lower-key outdoor play ideas that keep a baby comfortable in summer also keep them out of the worst mosquito hours.
How to treat a bite or sting
Almost every bite needs less than you think. Wash it with soap and water. Put a cool, damp cloth on it for a few minutes to take the heat and itch down. For the itching and swelling, an age-appropriate antihistamine or an anti-itch cream or gel from the pharmacy is enough. Ask the pharmacist which product suits your child's age, because some are not licensed for the youngest babies.
The thing that turns a harmless bite into a problem is scratching. A child scratches, breaks the skin, and bacteria get in. So keep fingernails short, and distract more than you forbid. A cool compress held there for a minute often beats "stop scratching" said for the tenth time.
For a bee or wasp sting, get the stinger out if it is still in the skin (scrape it sideways rather than pinching, which can squeeze more venom), then cool the spot and watch the next hour for anything beyond local pain and swelling. A sting hurts more than a mosquito bite and the swelling around it can look alarming and still be completely normal.
Ticks are their own job. Use fine-tipped tweezers, grip the tick as close to the skin as you can, and pull straight out with steady pressure. Don't twist, don't burn it, don't smother it in oil. Clean the area afterward. Then, for the next few weeks, keep half an eye out for an expanding or bull's-eye-shaped rash around the bite, or your child feeling generally unwell. If either shows up, see a doctor and mention the tick.
Repellent safety by age
This is where parents get the most conflicting advice, so here is the version the experts agree on. Per the AAP:
- Under 2 months: no insect repellent at all. Physical barriers only - netting over the cot and pram, light clothing covering arms and legs.
- 2 months and older: repellents containing DEET are considered safe and effective. A concentration of roughly 10–30% is the usual range. Higher percentage means it lasts longer before you reapply, not that it repels more strongly. Picaridin is a well-regarded alternative if you prefer it.
How you apply it matters as much as what you pick. Spray or pump it onto your own hands first, then smooth it onto your child rather than spraying near their face. Keep it away from the eyes and mouth, and off their hands, because their hands end up in their mouth. Don't put it under clothing. Apply it once, not constantly. And when you come back indoors, wash it off with soap and water.
Two things to skip. Avoid the combined sunscreen-and-repellent products: sunscreen needs frequent reapplication while repellent should not be over-applied, so a single product fights itself. And steer clear of heavily perfumed lotions and sprays, which can actually draw insects in.
When to act and when to wait
Most bites need nothing but the wash-cool-soothe routine and a couple of days of patience. The decision tree is short.
- Itchy bump, mild local redness, no fever - wait. Treat the itch, keep nails short, let it settle over a few days.
- A large area of swelling around one bite, but the child is well - usually still fine. A "large local reaction" can look dramatic and be harmless. Cool it, soothe it, watch it.
- Spreading redness, warmth, pus, or a fever appearing a day or two later - act. That is a possible skin infection and needs a doctor, though not an emergency room.
- Any swelling of the face, lips, mouth, or throat, trouble breathing or swallowing, hives spreading across the body, dizziness or collapse - emergency. Call 112. Don't wait to see if it passes.
The hard part for a tired parent is the middle row. A bite near the eye can swell the whole eyelid shut and still be a perfectly ordinary reaction. Frightening to look at, fine in a couple of days. If the child is breathing normally, drinking, and otherwise themselves, the puffiness alone is not the emergency. The bite that looked tiny at bedtime and twice the size by breakfast is almost always this same story: a normal reaction running its course, not a warning.
Common mistakes
A few habits make bites worse rather than better:
- Letting them scratch. It feels like relief and causes infection. Short nails, cool compress, distraction.
- Repellent on a newborn. Under 2 months, the answer is netting and clothing, never a spray.
- Reaching for the strongest DEET you can find. 30% lasts a long evening; you almost never need more, and "stronger" is a myth here.
- Combined sunscreen-plus-repellent. Two products with opposite reapplication rules, doing neither job well.
- Panicking at a big local swelling. Size of the swelling is not the warning sign. Breathing, the face, and the throat are.
- Squeezing or burning a tick. It raises infection risk. Steady straight pull with fine tweezers, every time.
When to call the doctor or emergency services
Call 112 (or your local emergency number) immediately if a child shows signs of a severe allergic reaction after a bite or sting: swelling of the face, lips, mouth, or throat, difficulty breathing or swallowing, widespread hives, or sudden dizziness or collapse. This is anaphylaxis, it moves fast, and it is the one scenario where minutes count.
See a doctor the same day, but not as an emergency, for a spreading red, warm, painful area or pus and fever pointing to infection, a sting inside the mouth or throat, a very large local reaction that keeps growing after 48 hours, or a tick bite followed by a rash or your child feeling unwell. If you are weighing up whether a fever after a bite needs a call at all, the same wait-versus-act logic is in our guide on when to monitor and when to call the doctor.
Frequently asked questions
How long do mosquito bites last in children?
Most mosquito bites itch for a day or two and fade within three to five days. Children can react more strongly than adults, so a bite may swell more and stay red a little longer. As long as your child is well and the bite is not spreading, hot, or oozing, that bigger reaction is normal.
What is the best thing to put on a child's bite for itching?
Wash it, apply a cool compress, then use an age-appropriate anti-itch cream, gel, or an antihistamine recommended by your pharmacist. Keep nails short to stop scratching. Avoid anything strongly perfumed, and ask the pharmacist which products are licensed for your child's age.
Can I use insect repellent on my baby?
Not under 2 months. For young babies, use a mosquito net over the pram and cot plus light long clothing. From 2 months, repellent with DEET around 10–30% is considered safe. Apply it to your hands first, keep it off their hands and face, and wash it off indoors.
When is an insect bite an emergency?
When there are signs of a severe allergic reaction: swelling of the face, lips, mouth, or throat, trouble breathing or swallowing, hives spreading over the body, or dizziness and collapse. Call emergency services straight away. A large swelling around a single bite, with no breathing problems, is not itself an emergency.
How do I remove a tick from my child safely?
Use fine-tipped tweezers, grip the tick as close to the skin as possible, and pull straight out with steady pressure. Don't twist, burn, or cover it in oil. Clean the area, and over the following weeks watch for an expanding or bull's-eye rash or your child feeling unwell, which means see a doctor.
How KidyGrow helps you
Let's be honest about the limits first: no app keeps a mosquito off your child. KidyGrow won't repel anything, and the netting and the clothing do the real work here. What it does is hold the routine thread across a chaotic summer so you are not carrying every detail in your head.
When a bite reacts strongly, you make a quick note: "big reaction to a bite on the left calf, swelled for 2 days, settled with antihistamine." Three weeks later at the pediatric visit, you can't remember which leg or which week. The app remembers. By the second week of using it, the morning Daily Brief stops saying generic things and starts noticing the small repeats that matter, the way one child reacts harder to bites than the sibling did. It learns your child's pattern, not an average one, and it keeps that note ready for the pediatric visit when you'd otherwise be guessing.
Sometimes there is nothing useful to find, just a bumpy week and an itchy kid. But when something does keep repeating, having it written down beats trying to reconstruct it across a season of bites, teething, and the other small things a summer throws at you. The morning question moves from "wait, which week was that" to "here is exactly what happened, now the doctor can decide."
Sources
- NHS. Insect bites and stings. https://www.nhs.uk/conditions/insect-bites-and-stings/
- American Academy of Pediatrics (HealthyChildren.org). Insect Repellents. https://www.healthychildren.org/English/safety-prevention/at-play/Pages/Insect-Repellents.aspx
- Centers for Disease Control and Prevention (CDC). Mosquito Bite Prevention. https://www.cdc.gov/mosquitoes/prevention/index.html