Baby Health6 min read

When to Call the Doctor: A Parent's Guide to Baby Health Concerns

As a new parent, it's natural to worry about your baby's health. We've created a straightforward guide to help you recognise when your little one needs medical attention and when you can safely manage things at home.

Bubsworth Editorial Team

Reviewed for accuracy against NHS and NICE guidelines. Updated 1 April 2026.

Key Facts

  • Always trust your instincts - if something feels wrong, contact your health visitor or GP
  • NHS 111 is available 24/7 for non-emergency medical advice across the UK
  • High fever in babies under 3 months always requires urgent medical attention
  • Persistent crying, poor feeding, or unusual lethargy are signs to seek advice

Trust Your Parental Instinct

You know your baby better than anyone else. If something feels off - whether it's a change in behaviour, feeding patterns, or general alertness - it's worth getting it checked. There's no such thing as calling your GP 'too often' when you're concerned about your baby's wellbeing. Health visitors and GPs would much rather see you and reassure you than have you worry at home. Your instinct is a valuable tool, so never dismiss it.

High Temperature: When It Matters Most

Fever in babies can be concerning, and the action needed depends on age. For babies under 3 months, any temperature of 38°C or above requires urgent medical attention - contact your GP or call 111 immediately. For babies 3-6 months, a temperature above 39°C or one lasting more than 24 hours warrants a call to your GP. For older babies, focus less on the number and more on how your baby seems: are they eating, playing, and responsive? If they're bright and alert despite a fever, it's often less worrying than if they seem unwell. Always contact your GP if you're unsure.

Signs That Need Prompt Attention

Certain symptoms warrant a quick call to your GP or 111. These include: a rash that doesn't fade when you press a glass against it (possible meningitis), persistent vomiting or diarrhoea lasting several hours, signs of dehydration (fewer wet nappies, dry mouth, sunken fontanelle), difficulty breathing or wheezing, excessive drowsiness or difficulty waking, or refusing feeds for several hours. If your baby has had a fall or accident and you're worried, get them checked. Better safe than sorry with head injuries.

Managing Minor Illnesses at Home

Not everything needs a doctor's visit. Most coughs, sniffles, and mild fevers in otherwise well babies can be managed at home. Keep your baby comfortable, ensure they're feeding well, and maintain hydration. For babies over 2 months, infant paracetamol or ibuprofen can help with discomfort (always follow dosing instructions). A humidifier or steamy bathroom can ease congestion. Watch for improvement over a few days, but contact your GP if symptoms worsen or your baby becomes unwell.

When to Use NHS 111

NHS 111 is a fantastic resource for non-emergency medical concerns available 24/7. Call 111 if you need medical advice outside surgery hours, you're unsure whether your baby needs to see a doctor, or you need guidance on managing symptoms. The service can also arrange urgent appointments if needed. It's free, confidential, and staffed by trained advisors who can help you decide the best next step. Don't feel you're 'bothering' them - that's exactly what they're there for.

Building Your Support Network

Your health visitor is an invaluable ally during your baby's first year. They're trained to spot problems and offer reassurance. Don't hesitate to call them between appointments with questions or concerns. Your GP surgery may also have a duty nurse you can speak to by phone. Many surgeries now offer online consultations, which can be convenient for non-urgent matters. Knowing who to contact and when builds your confidence as a parent.

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