It's three in the morning. Your child is coughing and coughing, and you lie awake listening. Is it just a common cold cough — or is something more serious going on?
Nighttime coughing is very common in children, especially during cold and flu season. The good news is that coughing is itself a useful reflex — the body is trying to clear the airways. But some types of nighttime cough can signal conditions that need attention.
Why do children cough more at night?
There are several reasons why coughing is often worse at night than during the day:
- Lying position — mucus and discharge drain from the nasal passages down into the throat (post-nasal drip) and trigger the cough reflex
- Dry air — heated indoor air in winter can irritate the mucous membranes
- No distraction — during the day a child is active and occupied, which reduces the perception of coughing
- Stomach acid — in some children, stomach contents can back up when lying down (reflux) and irritate the airways
Coughing is the body's natural defense mechanism to remove mucus, dust, and irritants from the airways. It is usually a good sign — it means the body is working to clean itself.
Common causes of nighttime coughing in children
1. Cold and upper respiratory infection
By far the most common cause. Children can have 6–10 colds a year, and the cough can last 2–3 weeks after other symptoms are gone.
Characteristics:
- Wet, mucousy cough
- Stuffy or runny nose
- Possibly mild fever
- Cough worsens when lying down
2. Croup (laryngotracheitis)
Croup is a viral infection that causes swelling of the larynx lining. It most often affects children between 6 months and 3 years.
Characteristics:
- Barking, seal-like cough — sounds like a seal or a dog
- Comes on suddenly, often in the middle of the night
- May produce a high-pitched sound on inhalation (inspiratory stridor)
- Hoarse voice
- Often worse the first few nights, better during the day
For mild croup: take the child out into cold air (open a window or go outside) — this can quickly reduce the swelling. If the child has obvious difficulty breathing, stridor at rest, or appears very distressed, call emergency services (911).
3. Asthma and reactive airway disease
Cough as the main symptom of asthma is common in children. Asthma cough is often dry and tends to occur at night or early morning.
Characteristics:
- Dry cough, especially at night and with physical activity
- Wheezing or whistling in the chest
- Cough worsens with colds
- Cough lingers long after viral infections
Read more in our article on asthma in children.
4. Whooping cough (pertussis)
Whooping cough is a bacterial infection that can cause prolonged, intense coughing fits. The vaccine is given as part of routine childhood immunizations, but protection wanes over time.
Characteristics:
- Prolonged coughing fits that can last several minutes
- The characteristic "whoop" (gasping inhalation) after a coughing fit
- Can cause vomiting after coughing fits
- Can last for several weeks to months
- Most dangerous for infants under 6 months
Whooping cough in babies under 6 months can be life-threatening. Babies do not always produce the characteristic whoop — instead they may briefly stop breathing (apnea). Contact a doctor immediately if you suspect whooping cough in a baby.
5. Allergic cough
Allergies can cause chronic coughing, especially at night:
- Dust mite allergy — worsens in bed (mites live in mattresses and pillows)
- Pet dander allergy — if pets are in or near the bedroom
- Pollen allergy — seasonal, worsens with open windows
6. Reflux (gastroesophageal reflux)
Stomach contents backing up into the esophagus can irritate the airways and cause coughing. Most common in babies, but can affect older children too.
Characteristics:
- Cough shortly after the child lies down
- May be combined with acid regurgitation
- Worsens after large meals
Types of coughs — what they may mean
| Cough type | Sound | Possible cause |
|---|---|---|
| Wet, mucousy | Gurgling, productive | Cold, respiratory infection |
| Dry, repetitive | Irritating, hacking | Asthma, allergy, dry air |
| Barking | Seal-like, harsh | Croup |
| Long fits | Intense, may cause vomiting | Whooping cough |
| Wheezing on exhale | Whistling | Asthma, bronchiolitis |
Home remedies
General remedies for all types of nighttime cough
- Elevate the head of the bed — place a pillow under the mattress (not under the child's head) to slightly raise the upper body. This reduces post-nasal drip
- Humidify the air — use a cool-mist humidifier in the bedroom or hang a damp towel over a chair. Dry air irritates airways
- Enough fluids — make sure the child drinks well throughout the day. Fluids thin the mucus
- Saline nasal drops — before bedtime, especially for a stuffy nose. Available at pharmacies
- Air out the bedroom — fresh air before bedtime; ideal sleeping temperature is 64–68°F (18–20°C)
Remedies for cold cough
- Saline nasal spray — clears the nasal passages before the child lies down
- Nasal aspiration in babies — use a nasal bulb aspirator to suction out mucus
- Honey — children over 1 year can have a teaspoon of honey before bedtime. Studies show honey can relieve cough as well as many cough syrups
Never give honey to children under 1 year — risk of botulism. Honey as a cough remedy is only for children over 12 months.
Remedies for croup
- Cold air — take the child outside into cold air for 10–15 minutes. This can quickly reduce swelling in the larynx
- Calm and comfort — crying and agitation worsen symptoms because the child breathes faster
- Moist air — run hot water in the shower and sit with the child in the steamy bathroom
- Keep the child upright — sitting position makes breathing easier
Cough syrup and cough suppressants for children
The AAP and most pediatricians are cautious about recommending cough syrup for children:
- Cough suppressants are generally not recommended for children under 6 years
- Expectorants have limited documented effectiveness
- Honey (over 1 year) is as effective as many cough syrups in studies
- Saline nasal drops are often more effective than cough syrup
Talk to your pharmacist or doctor before giving a child cough syrup, especially for children under 2 years.
Coughing is the body's way of clearing the airways. Suppressing the cough with suppressants can actually prolong the illness. Focus instead on relieving the discomfort and treating the underlying cause.
When should you see a doctor?
Contact your pediatrician if:
- Cough lasts more than 3 weeks without improvement
- Child has repeated episodes of nighttime cough without a cold (may suggest asthma)
- Cough is accompanied by fever for more than 3–4 days
- Child is coughing up blood
- You suspect allergy as the cause
- Child is not thriving, eating poorly, or losing weight
Call urgent care or go to the ER if:
- Child has a distinct barking cough with stridor (croup that does not improve with cold air)
- You suspect whooping cough in a young child
- Child has high fever and appears very unwell
Call emergency services (911) if:
- Child has serious difficulty breathing
- Lips or skin turn bluish
- Child cannot speak, drink, or swallow
- Retractions between the ribs with each breath
- Child is limp or unresponsive
Breathing difficulties in children should always be taken seriously. If in doubt about whether it is urgent, it is better to call once too many times than once too few.
Cough in babies under 6 months
Young babies who are coughing need extra attention:
- Babies breathe primarily through the nose — a blocked nose can create major problems with feeding and sleep
- RSV (bronchiolitis) is a common cause of coughing and wheezing in babies under 1 year
- Whooping cough can be especially dangerous for very young babies
- Contact a doctor if the baby coughs persistently, has breathing difficulties, or feeds poorly
Frequently asked questions
Is it normal for coughing to be worse at night?
Yes, it is completely normal. Lying down causes mucus to drain down the throat and trigger coughing. Dry indoor air and the absence of distraction also play a role. As long as the child breathes fine and is not severely distressed, there is rarely cause for concern.
How long can a cough last after a cold?
Coughing after a common cold can last 2–3 weeks, sometimes up to 4 weeks. If the cough lasts longer than 3 weeks, the child should be seen by a doctor to rule out other causes.
Can I give my child a nighttime cough suppressant?
The AAP generally does not recommend cough suppressants for children under 6 years. Honey (over 1 year), saline nasal drops, and humidified air are safer and often just as effective.
How do I tell the difference between a cold cough and an asthma cough?
A cold cough is often wet and productive, and comes with cold symptoms. An asthma cough is typically dry, repetitive, and can occur without a cold. If a child has repeated episodes of dry nighttime cough, asthma should be evaluated by a doctor.
Should I keep my child home from daycare?
A child who is coughing but otherwise in good shape and without fever can usually go to daycare. Keep the child home if they have a fever, are clearly worn out, or are so distressed that they cannot participate in normal activities.
Sources
- American Academy of Pediatrics. "Cough in Children." AAP, 2024.
- CDC. "Croup (Laryngotracheitis)." Centers for Disease Control and Prevention, 2024.
- CDC. "Pertussis (Whooping Cough)." Centers for Disease Control and Prevention, 2024.
This article is written for informational purposes and does not replace medical advice. Contact your doctor or pediatrician if you are uncertain about your child's symptoms.