If a child is struggling to breathe, is floppy or will not wake, or their skin, lips or tongue look blue or grey: call 999 now. Colour changes are harder to see on brown and black skin, so check the palms, soles, lips and tongue. If you are worried but it is not an emergency, call NHS 111. In Northern Ireland use your GP out-of-hours service.

MarionSleep help for families

When to get medical help

Red flags in plain words. What needs 999, what needs 111, and what can wait for the health visitor.

In this section

Emergencies: 999 and 111

The signs that mean call now, including sepsis and croup.

Snoring and sleep apnoea

The signs parents do not expect, and the referral route.

Reflux

What is normal, and one safety correction many sites get wrong.

Crying and colic

The crying curve, and what to do when it is getting to you.

Growth, allergy and restless legs

Weight, suspected allergy, and what we will not claim about iron.

Specialist sleep services

How referrals work, and what to do if it is you who is struggling.

Where this comes from

  • NHS (nhs.uk) bronchiolitis, sepsis, croup, colic, anaphylaxis, fever and baby weight guidance, for the 999 and 111 criteria, croup, colic, the crying advice and the centile rule. These pages are cited by name; we have linked the ones whose exact addresses we hold.
  • NHS, reflux in babies, for posseting, the timescales and the instruction not to raise the head of the cot or Moses basket.
  • Great Ormond Street Hospital, obstructive sleep apnoea, for the child-specific signs, the 1 to 3% figure, risk groups and the overnight sleep study.
  • ICON, the UK infant crying programme, for the crying curve, the four ICON messages and the walking-away instruction.
  • Cry-sis, for the helpline number and hours and the average two hours of crying a day.
  • The Lullaby Trust, Baby Check app, for the 17 checks for babies under six months.
  • The Sleep Charity, National Sleep Helpline, for the hours, the age limits and what the service cannot cover.
  • Sheffield Children's Sleep Service and the GOSH Respiratory Sleep Unit, for how tertiary sleep services take referrals.
  • NHS, postnatal depression and Samaritans, for the parental crisis red flags and the 116 123 line.
  • Allergy UK, for the IgE and non-IgE timings, the symptom groups, the over-attribution caveat and the 01322 619898 helpline.
  • NICE guidance on referral for snoring and for autistic children, reproduced second hand: nice.org.uk blocks automated checking, so we have avoided quoting any threshold from it.

Last checked 1 August 2026. This page is general information, not medical advice. If you are worried about your child, speak to your health visitor or GP.