When it happens · 3 min read
Sore throat: is it strep?
They will not eat, they are pointing at their throat, and there is a fever. The question is always the same one: is this the kind that needs antibiotics?
Usually not. Most sore throats in children are viral, and most get better on their own. But the distinction is worth understanding, because it is one of the few where the answer changes what happens.
Last updated August 17, 2026
What points towards strep
A sore throat that came on suddenly rather than building over days. Pain on swallowing. Fever. Tonsils that are red and swollen, sometimes with white patches or streaks. Tiny red spots on the roof of the mouth. Tender, swollen glands at the front of the neck.
Sometimes a fine rash that feels like sandpaper, most obvious in the armpits, groin and neck creases, which is scarlet fever — the same bacterium with a rash, treated the same way and not more dangerous for having one.
What points away from it
Cough. Runny nose. Hoarseness. Red or streaming eyes. These belong to viral illnesses, and their presence makes strep considerably less likely — which is genuinely useful, because it is the thing you can assess at home.
Age helps too: strep is uncommon under three, so a sore throat in a two-year-old with a streaming nose is almost certainly a virus.
The overall base rate is worth knowing: only about three in ten children with a sore throat have strep. Most of the time the answer is a virus, and antibiotics would do nothing at all.
Why they still swab
Nobody can tell reliably by looking, including experienced clinicians — the appearances overlap far too much. That is the entire reason the rapid test and the throat culture exist.
This matters in both directions. Treating every sore throat with antibiotics drives resistance and causes side effects for the majority who were never going to benefit. Missing a genuine strep infection leaves a child unwell for longer and untreated.
If the swab is positive, antibiotics shorten the illness, reduce spread, and prevent the uncommon complications. Finish the course even once they seem well.
The ones that are urgent
Drooling, or being unable to swallow their own saliva.
Any difficulty breathing, noisy breathing, or sitting forward and refusing to lie down.
Unable to open their mouth properly, a muffled or hot-potato voice, or a neck that is swollen and tender with a child who looks very unwell.
Not drinking at all for a prolonged stretch, with fewer wet nappies — the pain sometimes stops a child drinking well before the infection does anything else.
Common questions
- Can I just ask for antibiotics to be safe?
- It is not a neutral safety net. For the seven in ten children whose sore throat is viral, antibiotics offer no benefit and carry real side effects, and repeated unnecessary courses are how resistance builds. The swab is what makes the decision a good one.
- How do I get them to drink when swallowing hurts?
- Cold things work better than warm — ice lollies, cold milk, yoghurt. Give age-appropriate pain relief and offer drinks about half an hour later, when it is working.
- When can they go back to preschool?
- For confirmed strep, generally after at least a full day of antibiotics and once the fever has gone. For a viral sore throat, when they are well enough to take part.
If it's this, not that
Still not sure
This page is the general answer. Yours is a specific child.
The advisor can be. It has read everything here, and it knows how old your children actually are — which is the whole difference wherever guidance changes with age. Ask it anything.
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Where this comes from
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Written from the sources named above, and it is not a substitute for your own doctor. If something feels wrong to you, that instinct is a good enough reason to call — you know yourself and this family better than any page does.