Child cough at night — patterns parents see.

Cough is the most common reason families come for a pediatric pulmonology view. Night cough specifically — the cough that wakes the child or the parent — has a smaller set of common patterns. Recognising which pattern your child fits is more useful than chasing a label.

Pattern 1 — post-viral night cough.

The classic story: child had a cold or viral illness two or three weeks ago. The runny nose has gone. The fever has gone. But a dry cough remains, often worse at night and with activity, sometimes lasting up to 4–6 weeks. The child is otherwise well, growing well, and active during the day.

This is the most common night cough pattern. It usually settles on its own. The role of pediatric pulmonology review is to make sure it really is this pattern — and not the start of an asthma-like pattern or something else.

Pattern 2 — asthma-pattern night cough.

Cough that happens on most nights, often in the early hours of the morning, with or without wheeze. Cough triggered by laughing, crying, cold air, exercise, dust or pets. Cough that responds to a reliever inhaler. A family history of asthma, eczema or allergy is common but not essential.

This pattern is worth a calm review — it is one of the most useful signals of underlying airway inflammation. The right plan often involves not just a reliever inhaler when symptoms come, but a low-dose controller to settle the underlying pattern.

Pattern 3 — allergic / post-nasal drip cough.

Cough that comes mainly when lying down, after a long day with a blocked or runny nose, in a child who often mouth-breathes, snores, has itchy eyes, or has dust or pollen sensitivities. The cough may sound "throat-clearing" rather than chesty.

Treating the nose often treats the cough. This is one of the reasons pediatric pulmonology and allergy go together — the nose and the lungs are one airway.

Pattern 4 — reflux cough.

Cough that comes shortly after lying down, after eating, or in the second half of the night. Sometimes paired with a sour taste, regurgitation, throat clearing, or unexplained discomfort after meals. More common in older children with a history of reflux as infants, or in children who eat close to bedtime.

Position changes, avoiding late meals, and addressing reflux can settle this pattern. It is worth not mistaking it for asthma.

Pattern 5 — chronic wet cough.

Cough that is consistently wet — sounds like there is phlegm — and that has lasted more than four weeks. This pattern is different from the others. It can be a sign of protracted bacterial bronchitis (a treatable cause of chronic wet cough in children) or, less commonly, something deeper like bronchiectasis, primary ciliary dyskinesia, cystic fibrosis or aspiration.

Chronic wet cough should not be left to "see if it settles." It deserves a structured pediatric pulmonology view.

What helps at home.

• Treat the nose. Saline nasal drops or sprays can clear the post-nasal drip that makes cough worse at night.
• Raise the head of the bed slightly for older children with reflux-pattern cough.
• Maintain comfortable bedroom air — not too dry, not too humid; reduce dust where allergy is suspected.
• Avoid smoke exposure of any kind. This includes mosquito coils, agarbatti and cooking smoke where possible.
• Treat known asthma as per the action plan — do not stop controller inhalers without review.
• Avoid sedating cough syrups in young children.

What not to do blindly.

• Do not give repeated courses of antibiotics for every cough.
• Do not start a controller inhaler without a clear pattern review.
• Do not stop an asthma controller because cough has improved — settling is the point.
• Do not ignore a wet cough that has lasted more than four weeks.
• Do not assume "it is just allergy" without checking whether asthma also fits.

When a calm review can help.

A pediatric pulmonology view fits well for night cough that has lasted more than four weeks, cough that is recurrent after every cold, cough that is consistently wet, cough that responds to inhalers but keeps coming back, or any cough where the pattern is genuinely unclear. The review is about pattern interpretation, not just another prescription.

Parent questions.