Trust the child, not just the thermometer

The hardest part of parenting a sick child is judging severity, and the most reliable guide is simpler than most parents expect: watch the child, not the number. A little one at 39.2°C who is still demanding snacks, watching cartoons and grumbling at you is generally far less worrying than one at 38.3°C who is limp, silent, refusing drinks and hard to interest in anything. Behaviour, breathing, drinking and alertness tell you more than any single reading.

That principle sits underneath every specific rule below.

Straight to A&E — or 999 — for these

Some presentations in children are never a wait-and-see:

  • Laboured breathing. Ribs or the notch of the neck sucking in with each breath, grunting, flared nostrils, breathing too hard to feed or talk — and in small babies, the head bobbing in time with breaths.
  • A rash that stays put under glass. Press the side of a clear tumbler firmly over the spots: if you can still see them through the glass, treat it as suspected meningococcal disease and call 999.
  • Floppiness or unrousability. A child who is unusually limp, cannot be properly woken, or drifts off mid-interaction.
  • A fit — any first seizure, or one lasting beyond five minutes.
  • Any fever in a baby under three months. A temperature of 38°C or more in the first twelve weeks always needs same-day medical assessment.
  • A swallowed button battery or magnets. Batteries burn through tissue within hours; multiple magnets can trap bowel between them. Both are genuine emergencies even if the child seems fine.
  • A significant head injury — knocked out, vomiting afterwards, increasingly drowsy or confused, or a fall from above head height. The full red-flag list is in our head injuries guide.
  • Serious burns — anything involving the face, hands, feet, genitals or a joint, anything blistering larger than the child's own palm, and any notable burn in a baby. First aid and thresholds are in our burns and scalds guide.
  • An obviously deformed limb or a child in severe pain that proper doses of paracetamol or ibuprofen do not touch.

What can usually wait — or go elsewhere

Most childhood illness never needs a hospital. Colds, coughs and sore throats in a child who is drinking and alert; short-lived tummy bugs; grazes, bumped shins and small cuts you can clean and close at home; mild fevers responding to rest, fluids and age-appropriate medicine — these are pharmacy, GP or home territory.

For injuries in between — a limping ankle, a wrist they will not use after a fall, a cut that gapes — an urgent treatment centre usually has everything needed, including X-ray, with a far shorter and calmer wait than A&E; our broken bones and sprains guide helps you judge. And whenever you are torn, NHS 111 has dedicated children's pathways and will happily assess a child based on what you describe. No decent clinician anywhere will criticise a parent for checking.

What a children's A&E visit looks like

A different environment

Many hospitals run a separate paediatric emergency area — softer decor, toys, child-height equipment, staff who spend their days with children. Where there is no separate unit, children are still assessed using child-specific charts and seen by staff trained in paediatrics.

Triage speaks a different language for children

Normal heart rate, breathing rate and blood pressure all shift with age — figures alarming in an adult can be routine in a two-year-old. Triage nurses assess against age-banded charts, which is why they will ask a baby's age in months and the child's rough weight (it sets medicine doses). Bring both to mind on the way in. How the priority system then works is covered in how triage works.

You are part of the clinical team

Nobody knows this child's normal like you do. "She's just not herself" is real clinical information — say it. Stay with your child throughout, answer for them where they cannot, and comfort them during procedures; a calm parent on the trolley is worth more than any distraction technique the staff have. For pain, staff use child-friendly tools — pointing at faces on a chart, or simply reading behaviour in pre-verbal children — so describe what you have noticed: clutching an ear, refusing to stand, crying when picked up.

One crucial honesty: medicines already given

Tell staff exactly what medicine the child has had today, what dose, and when — including anything given in the car park. Doses of paracetamol and ibuprofen stack, and staff must know what is already on board before giving more. Bring the bottle if you can.

Packing for a visit with a child

Children's visits run long, and hospital vending machines do not stock patience. On top of the basics in our packing checklist:

  • Spare nappies, wipes and a full change of clothes — illness is messy
  • Their comfort object, whatever it is; it makes examinations dramatically easier
  • Feeds for babies: your formula, your bottles
  • Quiet snacks and a drink for older children
  • A charged device with entertainment downloaded in advance — assume no usable WiFi
  • The little red book (child health record) if you have it, plus any recent hospital or clinic letters

If two adults can come, split the jobs: one holds and comforts, the other registers, fetches and phones.

Three illness patterns worth recognising

The barking cough. A cough like a seal, often worse at night, sometimes with a harsh noise on breathing in, is typically croup. Mild croup is managed at home with calm and comfort; noisy breathing at rest, working hard to breathe, or blueness needs emergency assessment.

The wheezy baby. Bronchiolitis, common in winter infants, starts like a cold then moves to the chest — wheeze, fast breathing, struggling with feeds. Taking much less milk than usual, drier nappies, or effortful breathing are the signals to seek help the same day.

The vomiting child. Most vomiting is a short-lived bug; the danger is dehydration. Offer small sips often. No wet nappy for many hours, a dry mouth, no tears, or unusual drowsiness moves this from home care to medical review. Green (bile-stained) vomit needs urgent assessment.

Afterwards: the safety net matters more with children

Children change fast — in both directions. Before leaving, make sure you know precisely which changes should bring you back, and never feel awkward about returning: a re-attendance with a child who has worsened is exactly what emergency departments want you to do. If new symptoms appear after you get home, that is a fresh assessment, not a repeat of the old one.

Quick recap

  • Judge by behaviour, breathing and drinking — not the thermometer alone.
  • Glass test failure, breathing distress, floppiness, first fits, under-three-month fevers, button batteries: emergency care, no hesitation.
  • Middling injuries often mean a UTC; uncertainty means 111.
  • Know age in months and rough weight; declare every dose of medicine already given.
  • Pack for a long stay, keep yourself calm for their sake, and check live waits if more than one suitable department is in range.