When to take your sick child to the GP (and when to wait it out at home)

June 01, 2026

When to take your sick child to the GP (and when to wait it out at home)

It's 2am. Your child's got a temperature, a cough that sounds louder than it probably is, and they've just refused half a bottle. Your partner's asleep, the kettle's gone cold twice, and Google has helpfully served up everything from a mild cold to a worst-case scenario on the same search page. Do you call the GP, head for the ED, or hold tight until morning?

For situations exactly like this one, we asked paediatrician Dr Golly how he thinks about it. The reassuring bit is that there's a much calmer way to triage at 2am than scrolling parenting forums in the dark.

How to tell if your child is too sick for daycare or needs a GP

Dr Golly's first rule is the one most parents forget under pressure: look at the child, not just the symptoms. As he puts it, kids "can't always tell us what's wrong, and they can deteriorate quickly," which is exactly why fixating on a single thermometer reading or one alarming-sounding cough can send you in the wrong direction.

Instead, he asks three quick questions. How do they look? How are they behaving? Are they drinking enough? If your child's alert, getting some fluids in, and not in obvious distress, most common viral illnesses can be ridden out at home with rest, fluids, and the most underrated medicine of all, which is time.

The 3 B's and 3 P's: a paediatrician's checklist for sick children

Dr Golly's go-to triage tool is a simple framework he calls the 3 B's and 3 P's. Once you've got it, it's hard to unsee, and it does most of the heavy lifting when your brain isn't at its best.

The 3 B's:

  • Breathing. Is it fast, laboured, or noisy?
  • Behaviour. Are they unusually drowsy, or just not themselves?
  • Breast and bottles. Are they drinking less than half their usual intake?

The 3 P's:

  • Pee. Fewer wet nappies than usual, or dark, concentrated urine?
  • Poo and vomit. Any blood or mucus in the stool, or bright green vomit?
  • Pain. Persistent, worsening, or coming with sensitivity to light?

If anything in those six is shifting in a worrying direction, that's your cue to escalate care. If they're all stable, you can usually monitor at home and reassess in the morning.

When to worry about a fever in children

If one symptom sends parents reaching for the car keys at midnight, it's fever. Dr Golly's view here is gently freeing. Fever is a sign the body's fighting an infection or inflammation, rather than an illness in itself.

A normal temperature sits between 36°C and 37.5°C, and anything above 38°C counts as a true fever. Teething might nudge the number up a fraction, but it won't cause a real fever. What matters more than the digit on the thermometer is the trend over time, and how your child's behaving alongside it. As Dr Golly says, "we treat the child, not the number."

Most fevers settle with time and supportive care: regular fluids (breast milk, formula, or water), comfortable clothing, a calm and cool environment, and paracetamol or ibuprofen if your child's uncomfortable, following the correct dosing. Cold baths and forceful cooling aren't helpful and tend to make everyone more miserable than they already were.

There's one firm exception. For babies under three months, any temperature over 37.5°C needs immediate medical assessment, full stop. It's not a wait-and-see situation.

You also want to be more concerned when a fever sits above 38°C and lasts more than three to five days, or when it comes with difficulty breathing, a stiff neck, a severe headache, a rash that doesn't fade when pressed, confusion or unusual drowsiness, or poor fluid intake.

Sick child red flags by age

Some symptoms warrant a GP visit or a trip to the ED regardless of how brave you're feeling. Dr Golly breaks these down by age.

In babies under 12 months, and especially under 3 months, watch for:

  • Any fever over 37.5°C in a baby under 3 months, which always needs medical review
  • Poor feeding or refusing feeds
  • Lethargy, or being difficult to wake
  • Fewer wet nappies, suggesting dehydration
  • Breathing changes that are fast, laboured, or noisy

In children over 12 months, watch for:

  • Persistent high fever, or fever that isn't responding to medication
  • Lethargy, or not interacting the way they usually would
  • Vomiting or diarrhoea with signs of dehydration
  • Difficulty breathing
  • A rash with fever
  • Severe pain or inconsolable crying

One to know across every age: a non-blanching rash, meaning one that doesn't fade when you press a clear glass against it, needs immediate medical attention. This is one of the few symptoms where you don't wait it out.

Should you trust your gut when your child seems off?

If you take one thing from this article, take this. Dr Golly's view is that parents are usually very good at sensing when something isn't quite right, often before any clear symptoms appear. As both a paediatrician and a parent, he said he regularly fields calls from friends just needing reassurance, and what he's learnt is that not every parent has that sounding board, but the instinct itself is still there.

If your child seems "off" in a way you can't quite explain, that's worth paying attention to. Most of the time it won't be serious. But the feeling itself is your cue to pause, reassess, and seek advice if you need it. You don't have to have all the answers. You just have to trust when something doesn't feel right.

When parents wait too long vs. go to the GP unnecessarily

In Dr Golly's experience, the most common reason parents bring their kids in unnecessarily is for mild viral illnesses, the kind of runny noses, low-grade fevers, and chesty coughs that just need rest, fluids, and time.

The more concerning pattern is the opposite one. Waiting too long, when a child has become lethargic, stopped drinking, or developed breathing changes, is where earlier review genuinely matters. His reassurance for any parent currently second-guessing themselves is worth quoting in full: "a doctor will never be annoyed at you for bringing your child in to be checked. If you're worried, it's always okay to seek help. You won't regret having them reviewed, but you might regret waiting too long."

So please don't talk yourself out of a check-up because you're worried you're overreacting. That's not how any of this works.

What to do when your child is sick in the middle of the night

When you're standing in a dark hallway trying to decide whether to make the call, your brain isn't at its sharpest, and that's the time the framework earns its keep. Come back to the 3 B's and 3 P's. Breathing, behaviour, breast and bottles, pee, poo and vomit, and pain. If those areas look stable, it's usually reasonable to monitor and review in the morning. If they aren't, or if you genuinely can't tell, seek care.

If you're sitting in the middle of the night between "this can wait" and "this needs the ED right now," the free Healthdirect helpline is staffed 24/7 by registered nurses and is built for exactly that in-between.

Dr Golly's also created a simple illness tracker for these moments, because when you're tired it's easy to lose track of what medication you gave at what time, what the temperature was an hour ago, and which symptoms started when. Writing it down keeps you clear-headed and gives your GP a much sharper picture if you do end up needing one. It's worth printing a copy to live in your first aid kit.

Next steps for parents of sick children

Sick days, mystery symptoms, and middle-of-the-night second-guessing are part of life in the early years, and you're not failing if you've spent more nights than you'd like Googling rashes. 

For more honest, expert-backed guides like this one, the Parent Playbook on Care for Kids is a good place to keep reading, and if you're sorting out care for the long stretch of winter colds ahead, you can search and compare childcare near you on Care for Kids too.

FAQ

How do I decide if my child needs to see a GP or can stay home? 

Paediatrician Dr Golly recommends running through the 3 B's and 3 P's: breathing (fast, laboured, or noisy), behaviour (unusually drowsy or not themselves), breast and bottles (drinking less than half their usual intake), pee (fewer wet nappies or dark urine), poo and vomit (blood, mucus, or bright green vomit), and pain (persistent or worsening). If anything in those six is concerning, it's time to seek medical advice. If they're all stable, you can usually monitor at home.

When should I be worried about my child's fever? 

A fever is generally above 38°C. You should be more concerned when a fever lasts more than three to five days, or when it comes with difficulty breathing, a stiff neck, severe headache, a non-blanching rash, confusion, unusual drowsiness, or signs of dehydration. For babies under three months, any temperature above 37.5°C needs immediate medical assessment rather than home monitoring.

What's a non-blanching rash and why does it matter? 

A non-blanching rash is one that doesn't fade when you press a clear glass against the skin. Dr Golly says it needs immediate medical attention regardless of how well your child otherwise seems, because it can be a sign of serious infection. This is one of the few childhood symptoms you should never wait out.

Should I trust my gut if something feels off but the symptoms look mild? 

Yes. Dr Golly says parents are often the first to sense when something isn't right, before any clear symptoms appear. If your child seems off in a way you can't quite explain, treat that as your cue to pause, reassess, and seek advice. Most of the time it won't be serious, but you won't regret a check-up if something genuinely is.

Will my GP think I'm overreacting if I bring my child in for something minor? 

No. Dr Golly is clear that a doctor will never be annoyed at a parent for bringing their child in to be checked. The greater regret is waiting too long, particularly with young babies. If you're worried, that on its own is reason enough to seek help.

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Written by

Dr Golly

Toddle is the most comprehensive child care finder in Australia, on a mission to make parents’ lives easier.


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