Why Is My Child Coughing? A Pediatric ENT Guide

What the length and the sound of a cough can tell you, and when it needs a closer look

Cough is one of the most common reasons parents call a pediatrician, and one of the most common reasons I am asked to see a child. Most coughs are the tail end of an ordinary cold. A smaller number need a specific treatment, and a very few are emergencies. As a fellowship-trained pediatric ENT in Frisco, I find that two questions sort most children into the right group: how long has the cough lasted, and what does it sound like? This guide walks through both, explains where the nose, throat, and voice box fit in, and lists the warning signs that mean you should not wait it out.

Key takeaways

• Most coughs from colds are gone within about three to four weeks. A large review of studies in children found that acute cough had resolved in 90 percent of children by day 25.
• A daily cough lasting more than four weeks is “chronic” under pediatric guidelines from the American College of Chest Physicians (CHEST). It deserves a medical evaluation, which usually includes a chest X-ray and, in children old enough, a breathing test.
• A wet, rattly cough that lasts more than four weeks is often a lingering bacterial bronchitis that responds to a course of antibiotics chosen by your child’s doctor.
• A coughing fit that starts suddenly after choking on food or a small object may mean something went into the airway, even if your child seems fine a few minutes later. That needs a same-day evaluation.
• Over-the-counter cough and cold medicines are not recommended for young children. Honey is a reasonable option for children over 12 months old, but never for babies under one year.
• Acid-reflux medicine should not be used to treat a cough unless your child also has reflux symptoms such as frequent spitting up or heartburn.
• Noisy breathing, a hoarse voice, repeated croup, or a cough tied to sinus symptoms are good reasons to involve a pediatric ENT.

Step one: check the calendar

Duration is the single most useful clue. Pediatric guidelines define chronic cough in children as a daily cough lasting more than four weeks, a shorter cutoff than adults, because the causes of long-lasting cough in children are different.

The CHEST guideline also lists “specific cough pointers,” findings that suggest a particular underlying problem and warrant further testing instead of watchful waiting. They include wheezing or crackles heard with a stethoscope, chest pain, shortness of breath or fast breathing, a chest wall deformity, heart problems, coughing during feeds, clubbing of the fingertips, and any history of a choking episode.

Step two: listen to the sound

A wet or rattly cough

A wet cough sounds like there is mucus moving in the chest. In the first few weeks after a cold, that is normal. When a daily wet cough lasts beyond four weeks in a child who is otherwise well, the most common explanation is protracted bacterial bronchitis, a bacterial infection of the airways that lingers after a virus. The CHEST guideline found high-quality evidence that a two-week course of an appropriate antibiotic helps. If the cough persists, a second two-week course is recommended, and a cough still wet after four weeks of antibiotics should prompt a search for an underlying lung or airway condition.

A daytime cough or nasal drainage that has not improved after 10 days can also be a sign of bacterial sinusitis. My post on sinusitis in children explains those patterns.

A dry cough

A dry, tickly cough often follows a viral infection and simply takes time to settle. It can also be part of asthma, particularly when it comes with wheezing, shortness of breath with exercise, or a strong personal or family history of allergy. Guidelines advise against starting asthma medicine for a cough alone; when asthma features are present, a short, defined trial of an inhaled steroid may be reasonable, and it should be stopped if the cough does not respond. Irritants such as tobacco smoke and vaping aerosol in the home are worth addressing in every child with a lingering cough, whatever the cause.

A barky, seal-like cough

A sudden barky cough, a hoarse voice, and sometimes a harsh, high-pitched sound when breathing in (stridor), often starting at night, is the classic picture of croup. It is a viral swelling of the voice box and windpipe, most common between 6 months and 3 years of age. According to a published review, the barky cough has resolved in about 60 percent of children by 48 hours, and fewer than 2 percent still have symptoms after five nights. Steroid medicine given by a clinician helps children with mild to severe croup. At home, the AAP’s advice is to keep your child calm, because crying worsens the cough and the work of breathing, to treat fever, and to keep fluids going. Parents were once told to sit with their child in a steamy bathroom; the AAP now notes that there are no studies proving that steam, or cool night air, improves croup breathing, and randomized trials of humidified air have not shown a benefit.

Croup that keeps coming back is a different story. A systematic review of children who had a bronchoscopy for recurrent croup found that the most common findings were narrowing below the vocal cords (subglottic stenosis), reflux-related changes, and floppy airway walls. Most children had no significant finding, but a history of having had a breathing tube (for example, as a premature newborn) made a significant finding more likely.

Coughing fits, a “whoop,” or vomiting after coughing

Long spells of coughing that leave a child gasping, with a whooping sound on the in-breath or vomiting afterward, raise concern for pertussis (whooping cough). Young infants may not whoop at all; instead they may have pauses in breathing or turn blue, and they face the highest risk of severe illness. Vaccination of children and pregnant mothers is the best protection. Call your pediatrician promptly if you suspect it, especially with a baby in the home.

A cough with noisy breathing

Noise during breathing helps locate the problem. Stridor, a high-pitched sound mainly when breathing in, usually comes from the voice box or upper windpipe. Wheezing, a musical sound mainly when breathing out, usually comes from the smaller airways in the chest. In young babies, stridor that is worse with feeding or crying is most often laryngomalacia, a floppy voice box that most infants outgrow; see my post on laryngomalacia and noisy breathing in babies and my page on airway and breathing issues in children.

A cough that started suddenly after choking

A child who was well, then had a sudden choking or gagging episode while eating or playing, followed by coughing, wheezing, or noisy breathing, may have inhaled something into the airway. Nuts and other foods are among the most commonly inhaled objects, and young children are at highest risk. A pooled analysis of published case series found that vague symptoms, or no symptoms at all, are not unusual after the first coughing spell settles, which is why these cases are sometimes diagnosed late. If you saw or suspect a choking event, tell your doctor, even if your child seems back to normal.

Where the ears, nose, and throat come in

Many lingering coughs start, or are kept going, above the chest:

• Sinus disease and nasal drainage. Daytime cough is a core symptom of both acute bacterial sinusitis and pediatric chronic rhinosinusitis (symptoms for 90 days or more). Still, CHEST advises against treating a cough as a sinus problem unless there are real nose or sinus symptoms or findings.
• Enlarged or infected adenoids. In younger children, the adenoids can harbor bacteria and keep the nose draining. When chronic sinus symptoms do not settle with medical treatment, adenoidectomy is the usual first surgery in children up to about age 12. See the ABCs of adenoids.
• Allergies. Allergic rhinitis causes drainage and throat clearing, especially in North Texas pollen seasons. See allergies versus colds and our Frisco pollen and allergen forecast.
• Reflux: less often the answer than people think. Whether reflux causes chronic cough in children is controversial. A CHEST review found no benefit of reflux treatment over placebo for cough, and acid-blocking proton pump inhibitors caused more serious side effects than placebo. CHEST advises against reflux treatment for cough unless a child has reflux symptoms such as regurgitation or heartburn; then the reflux is treated for 4 to 8 weeks and reassessed.
• The voice box and windpipe. A cough with hoarseness, stridor, or repeated croup can come from the larynx or just below it: laryngomalacia, narrowing after a previous breathing tube, or, rarely, growths. These are diagnosed by looking directly, with a thin flexible camera in the office or an examination under anesthesia. See my page on pediatric airway care.
• An inhaled object. A suspected airway foreign body is confirmed and removed by bronchoscopy under general anesthesia.

Comfort care at home, and what to skip

• Honey, for children 12 months and older. A Cochrane review of randomized trials found that honey probably reduces cough frequency more than no treatment or placebo, and that it performs about as well as the cough suppressant dextromethorphan. Never give honey to a baby under 12 months, because it can cause infant botulism.
• Fluids, rest, and saline for the nose. Saline drops with gentle suction can help babies feed.
• A humidifier if the air is dry. The American Academy of Pediatrics (AAP) suggests it for comfort; keep it clean. For croup specifically, the AAP notes that steam has not been shown to help; keeping your child calm matters more, and labored breathing needs medical care, not mist.
• Skip over-the-counter cough and cold medicines in young children. The US Food and Drug Administration (FDA) does not recommend them for children under 2 because of the risk of serious side effects, and manufacturers label them “do not use in children under 4 years of age.” The AAP advises using them in 4- to 6-year-olds only if your child’s doctor recommends it. A Cochrane review found no good evidence that they help acute cough in children.
• Fever and pain relief. Acetaminophen or ibuprofen can help a sick child rest. Dose by your child’s weight, following your pediatrician’s advice or the package label.
• Keep the air smoke-free, and skip leftover antibiotics or someone else’s inhaler. Treatment should match a diagnosis.

Red flags: when a cough is an emergency

Call 911 or go to the emergency department if your child:

• Is working hard to breathe: pulling in at the ribs or the base of the neck, flaring the nostrils, grunting, or breathing very fast
• Has blue or gray color around the lips, or a baby has pauses in breathing
• Has stridor while resting quietly, is drooling, or cannot swallow
• Cannot speak or cry normally, or is unusually sleepy or hard to wake
• Coughs up blood
• May have swallowed a button battery or magnets, even without symptoms

Get a same-day medical evaluation if your child:

• Had a choking episode followed by coughing, wheezing, or noisy breathing, even if it has settled
• Is a young infant with coughing spells, or has coughing fits followed by vomiting or a whoop
• Is coughing with a high fever and looks ill, or shows signs of dehydration

When to see a pediatric ENT

Your pediatrician manages most coughs, and many chronic coughs are handled by pediatricians and pediatric lung specialists. A pediatric ENT evaluation is worth considering when:

• A chronic cough comes with nasal blockage, thick drainage, or sinus symptoms that have not settled
• Your child has noisy breathing (especially stridor), a persistently hoarse or weak voice, or trouble feeding with breathing problems
• Croup keeps coming back, croup-like symptoms appear outside the usual age range, or your child had a breathing tube as a newborn and now has stridor
• A foreign body in the airway is suspected
• Coughing comes with choking during feeds, or you are concerned about swallowing
• Your child snores, breathes through the mouth, or seems to have enlarged adenoids. See my post on snoring in children.

From my research and practice

Airway foreign bodies and laryngeal problems have been a large part of my academic work. I co-authored the chapter “Foreign Bodies and Caustic Ingestion of the Aerodigestive Tract” with Dr. Douglas Ruhl for Sataloff’s Comprehensive Textbook of Otolaryngology (2015), and the chapter “Laryngeal Disorders” with Dr. Richard Smith for Oski’s Principles and Practice of Pediatrics (2006). In 2017, colleagues and I published a case report in JAMA Otolaryngology–Head & Neck Surgery describing an airway foreign body in a premature newborn, a reminder that airway foreign bodies are not limited to curious toddlers. A 2014 case series I co-authored described five toddlers, ages 11 to 18 months, with button batteries lodged in the esophagus, and showed how a second look at the esophagus a few days after removal can change management. I was also first author on a 2004 report of the University of Iowa’s principles and outcomes in pediatric airway reconstruction for children with airway narrowing. The full list is on my publications and research page.

The lesson I carry from that work: when a parent says “the cough started right after they choked on something,” I take it seriously, even when the child looks perfectly well.

Frequently asked questions

How long is too long for a cough after a cold?

Most cold-related coughs in children are gone within three to four weeks. A daily cough lasting more than four weeks is considered chronic and should be evaluated by your child’s doctor. See a doctor sooner if the cough is getting worse instead of better, or if any red-flag symptoms appear.

Should I give my child over-the-counter cough medicine?

Not for young children. The FDA does not recommend over-the-counter cough and cold medicines for children under 2, product labels say not to use them under age 4, and the AAP advises using them in 4- to 6-year-olds only on a doctor’s advice. For children over 12 months, honey is a reasonable alternative; never give honey to a baby under one year old.

Can acid reflux cause my child’s chronic cough?

It is possible but less common than many people assume, and reflux medicines have not been shown to improve cough in trials. CHEST guidelines advise against treating a child’s cough with reflux medicine unless the child also has reflux symptoms, such as frequent regurgitation or heartburn. If those symptoms are present, the reflux is treated for a set period and then reassessed.

Could my child have inhaled something even if I did not see it happen?

Yes. Not every choking episode is witnessed, and after the first coughing spell, symptoms can be mild or absent, which is why some airway foreign bodies are found late. A cough or wheeze that started suddenly in a previously well child should raise the question with your doctor.

What does a pediatric ENT do to evaluate a chronic cough?

The visit starts with a detailed history and an examination of the ears, nose, throat, and neck. Many children can have a quick look at the nose, adenoids, and voice box with a thin, flexible camera after a numbing spray. If a foreign body or a narrowing of the airway is suspected, a direct examination of the airway under general anesthesia may be recommended.

References

1. Chang AB, Oppenheimer JJ, Irwin RS; CHEST Expert Cough Panel. Managing chronic cough as a symptom in children and management algorithms: CHEST guideline and expert panel report. Chest. 2020;158(1):303–329. doi:10.1016/j.chest.2020.01.042
2. Chang AB, Oppenheimer JJ, Weinberger MM, et al. Management of children with chronic wet cough and protracted bacterial bronchitis: CHEST guideline and expert panel report. Chest. 2017;151(4):884–890. doi:10.1016/j.chest.2017.01.025
3. Chang AB, Oppenheimer JJ, Kahrilas PJ, et al. Chronic cough and gastroesophageal reflux in children: CHEST guideline and expert panel report. Chest. 2019;156(1):131–140. doi:10.1016/j.chest.2019.03.035
4. Thompson M, Vodicka TA, Blair PS, et al. Duration of symptoms of respiratory tract infections in children: systematic review. BMJ. 2013;347:f7027. doi:10.1136/bmj.f7027
5. Bjornson CL, Johnson DW. Croup in children. CMAJ. 2013;185(15):1317–1323. doi:10.1503/cmaj.121645
6. Hiebert JC, Zhao YD, Willis EB. Bronchoscopy findings in recurrent croup: a systematic review and meta-analysis. Int J Pediatr Otorhinolaryngol. 2016;90:86–90. doi:10.1016/j.ijporl.2016.09.003
7. Kilgore PE, Salim AM, Zervos MJ, Schmitt HJ. Pertussis: microbiology, disease, treatment, and prevention. Clin Microbiol Rev. 2016;29(3):449–486. doi:10.1128/CMR.00083-15
8. Foltran F, Ballali S, Passali FM, et al. Foreign bodies in the airways: a meta-analysis of published papers. Int J Pediatr Otorhinolaryngol. 2012;76(Suppl 1):S12–S19. doi:10.1016/j.ijporl.2012.02.004
9. Wald ER, Applegate KE, Bordley C, et al. Clinical practice guideline for the diagnosis and management of acute bacterial sinusitis in children aged 1 to 18 years. Pediatrics. 2013;132(1):e262–e280. doi:10.1542/peds.2013-1071
10. Brietzke SE, Shin JJ, Choi S, et al. Clinical consensus statement: pediatric chronic rhinosinusitis. Otolaryngol Head Neck Surg. 2014;151(4):542–553. doi:10.1177/0194599814549302
11. Oduwole O, Udoh EE, Oyo-Ita A, Meremikwu MM. Honey for acute cough in children. Cochrane Database Syst Rev. 2018;4:CD007094. doi:10.1002/14651858.CD007094.pub5
12. Smith SM, Schroeder K, Fahey T. Over-the-counter (OTC) medications for acute cough in children and adults in community settings. Cochrane Database Syst Rev. 2014;(11):CD001831. doi:10.1002/14651858.CD001831.pub5
13. US Food and Drug Administration. Should you give kids medicine for coughs and colds? Consumer Update. Updated 2024. fda.gov
14. American Academy of Pediatrics. Coughs and colds: medicines or home remedies? HealthyChildren.org. Updated 2022. healthychildren.org
15. American Academy of Pediatrics. Croup: treatment. HealthyChildren.org. Updated May 10, 2024. healthychildren.org
16. Cable BB, Ruhl D. Foreign bodies and caustic ingestion of the aerodigestive tract. In: Sataloff’s Comprehensive Textbook of Otolaryngology. JP Brothers Medical Publishers; 2015.
17. Cable BB, Smith RJH. Laryngeal disorders. In: Oski’s Principles and Practice of Pediatrics. Lippincott Williams & Wilkins; 2006.
18. Wei JM, Chang ET, Arnold R, Cable BB. Airway foreign body in a premature neonate. JAMA Otolaryngol Head Neck Surg. 2017;143(9):954–955. doi:10.1001/jamaoto.2017.0517
19. Ruhl DS, Cable BB, Rieth KK. Emergent treatment of button batteries in the esophagus: evolution of management and need for close second-look esophagoscopy. Ann Otol Rhinol Laryngol. 2014;123(3):206–213. doi:10.1177/0003489414522969
20. Cable BB, Manaligod JM, Bauman NM, Smith RJ. Pediatric airway reconstruction: principles, decision-making, and outcomes at the University of Iowa Hospitals and Clinics. Ann Otol Rhinol Laryngol. 2004;113(4):289–293. doi:10.1177/000348940411300406

If your child’s cough has lasted more than a month, comes with noisy breathing, or started after a choking spell, I’m happy to take a look. You can contact my office to schedule a visit in Frisco or at the McKinney office of ENT and Allergy Centers of Texas.