How long does a cough last in a child, and what should you do if it is persistent and does not go away?
Applies to age: 0–36 months
In short
A cold in younger children usually clears up within 2 weeks, and a cough lasting longer than 3 weeks is worth discussing with a doctor. If the child has trouble breathing, they need immediate medical help.
What is normal
All claims: international norm
- Most colds in younger children clear up within 2 weeks.
Source: NHS – show the original wording (EN)
Summarized and translated by the editors, not an official translation. Verbatim quote from the source, in its original wording:
Most colds in younger children get better within 2 weeks.
NHS · open the source · accessed: 2026-10-14 · license [1]
- With bronchiolitis (a chest infection in children under 2 years), the cough usually goes away within 3 weeks.
Source: NHS – show the original wording (EN)
Summarized and translated by the editors, not an official translation. Verbatim quote from the source, in its original wording:
Symptoms are usually worst between days 3 and 5, and the cough usually gets better in 3 weeks.
NHS · open the source · accessed: 2026-10-14 · license [1]
- If the child feeds, drinks, eats and breathes normally and has no wheezing, a cough is usually not a reason to worry.
Source: NHS – show the original wording (EN)
Summarized and translated by the editors, not an official translation. Verbatim quote from the source, in its original wording:
If your child is feeding, drinking, eating and breathing normally and there's no wheezing, a cough is not usually anything to worry about.
NHS · open the source · accessed: 2026-10-14 · license [1]
When to worry
All claims: international norm
Worth discussing with a doctor:
- A cough that lasts longer than 3 weeks is worth seeing a doctor about.
Source: NHS – show the original wording (EN)
Summarized and translated by the editors, not an official translation. Verbatim quote from the source, in its original wording:
If your child has had a cough that's lasted longer than 3 weeks, see a GP.
NHS · open the source · accessed: 2026-10-14 · license [1]
- A very high temperature (or the child feels hot, cold or shivery) may mean a chest infection; it is worth seeing a doctor.
Source: NHS – show the original wording (EN)
Summarized and translated by the editors, not an official translation. Verbatim quote from the source, in its original wording:
If your child's temperature is very high (or they feel hot, cold or shivery) they may have a chest infection.
NHS · open the source · accessed: 2026-10-14 · license [1]
- A cough that lasts a long time, especially one that gets worse at night or after running, may be a sign of asthma; it is worth seeing a doctor.
Source: NHS – show the original wording (EN)
Summarized and translated by the editors, not an official translation. Verbatim quote from the source, in its original wording:
If a cough continues for a long time, especially if it's worse at night or is brought on by your child running about, it could be a sign of asthma.
NHS · open the source · accessed: 2026-10-14 · license [1]
ER / 112 (Poland)
Some claims: international norm
Immediate medical help needed: international norm
- Trouble breathing in a child with a cough requires immediate medical help.
Source: NHS – show the original wording (EN)
Summarized and translated by the editors, not an official translation. Verbatim quote from the source, in its original wording:
Go to A&E or call 999 immediately if your child is finding it hard to breathe, as they'll need urgent treatment in hospital.
NHS · open the source · accessed: 2026-10-14 · license [1]
- Call an emergency medical team (ZRM) when someone has lost consciousness, has seizures, heart rhythm disturbances, extensive burns, persistent vomiting (especially with blood), severe shortness of breath or sharp abdominal pain.
Source: NFZ i Akademia NFZ – show the quote
Verbatim quote from the source:
Polish original
Wezwij zespół ratownictwa medycznego, jeśli ktoś w Twoim otoczeniu np. stracił przytomność, ma drgawki, zaburzenia rytmu serca, rozległe oparzenia, uporczywe wymioty – zwłaszcza z domieszką krwi, odczuwa nasiloną duszność lub ostry ból brzucha.
NFZ i Akademia NFZ · open the source · accessed: 2026-10-14 · license [2]
- Call 112 (the emergency number in Poland) or 999 (the ambulance number in Poland) if life or health is at risk.
Source: NFZ i Akademia NFZ – show the quote
Verbatim quote from the source:
Polish original
Zadzwoń na 112 lub 999, jeśli zagrożone jest życie lub zdrowie.
NFZ i Akademia NFZ · open the source · accessed: 2026-10-14 · license [2]
See a doctor
- Night and holiday care (NiŚOZ) is medical help outside the working hours of a primary care (POZ) clinic.
Source: NFZ i Akademia NFZ – show the quote
Verbatim quote from the source:
Polish original
Nocna i świąteczna opieka zdrowotna to pomoc lekarska po godzinach pracy przychodni POZ.
NFZ i Akademia NFZ · open the source · accessed: 2026-10-14 · license [2]
- A sick patient who comes to a POZ clinic should get an appointment on the day of the request.
Source: Portal Pacjenta – show the quote
Verbatim quote from the source:
Polish original
Jeśli przyjdziesz chory do przychodni, powinieneś uzyskać wizytę w dniu zgłoszenia.
Portal Pacjenta · open the source · accessed: 2026-10-14 · license [3]
international norm “International norm” next to a section heading means its claims come from a non-Polish source, because no Polish source in our registry covers this topic. When this applies to only some of the claims, the foreign ones carry the same label next to their source.
Sources
- NHS (nhs.uk, Anglia)
- https://www.nhs.uk/baby/health/colds-coughs-and-ear-infections-in-children/
- https://www.nhs.uk/conditions/bronchiolitis/
License: Open Government Licence v3.0. Source: NHS (nhs.uk, Anglia). Content summarized and translated by the editors; changed relative to the original. Contains public sector information licensed under the Open Government Licence v3.0. The summary is ours and is not attributed to the NHS. - NFZ i Akademia NFZLicense: Treści NFZ – wykorzystanie ze wskazaniem źródła, bez obrotu komercyjnego. Source: NFZ i Akademia NFZ. Content summarized and translated by the editors; changed relative to the original.
- Portal Pacjenta (pacjent.gov.pl)License: CC BY 3.0 PL. Source: Portal Pacjenta (pacjent.gov.pl). Content summarized and translated by the editors; changed relative to the original.