Cough in Children: Common Causes and When to Be Concerned

🩺 Written & Medically Reviewed by Dr. G
Board-Certified Pediatrician

Most coughs in children are caused by viral respiratory infections and improve with time and supportive care. What matters most is not simply how the cough sounds, but how your child is breathing, acting, drinking, and recovering.

Call your pediatrician if the cough is persistent, worsening, associated with fever or wheezing, or simply concerns you. Seek urgent medical attention for difficulty breathing, ribs pulling in with breathing, blue or gray lips or face, severe lethargy, or other signs of respiratory distress.

Few sounds get a parent's attention faster than a child coughing in the middle of the night.

You may wonder whether it is simply another cold, whether your child needs medicine, or whether the cough could mean something more serious.

Fortunately, most childhood coughs are caused by viral respiratory infections and get better without antibiotics. A cough is also an important protective reflex—it helps clear mucus and irritants from the airways.

The key for parents is learning to look beyond the cough itself and recognize the signs that tell us how well a child is actually breathing.

When evaluating a coughing child, I pay much more attention to how the child is breathing and behaving than to how dramatic the cough sounds.

A loud cough in a child who is comfortable, drinking, talking and breathing normally is generally less concerning than a quieter cough in a child who is breathing rapidly, pulling in at the ribs or struggling to speak.

Watch the child—not just the cough.

Coughing is one of the body's natural defenses.

When mucus, viruses, allergens or other irritants affect the respiratory tract, coughing helps clear material from the airway.

Children also tend to experience many respiratory infections, particularly when they attend daycare or school. That means coughing can seem almost constant during parts of the year.

According to the American Academy of Pediatrics, coughs associated with uncomplicated colds can linger. A cough may sometimes continue for several weeks even after other cold symptoms have improved.

The duration of the cough is important, but so are your child's breathing, energy level, hydration, fever and whether symptoms are improving or worsening.

There are many reasons children cough.

Viral respiratory infections are among the most common causes of childhood cough.

Children may also have:

• runny or stuffy nose
• sore throat
• mild fever
• decreased appetite
• tiredness
• mucus or congestion

Antibiotics do not treat viral infections and generally will not shorten a viral cough.

Mucus draining from the nose into the throat can trigger coughing, particularly when a child lies down.

This is one reason coughing may become more noticeable at bedtime.

Croup commonly causes a distinctive barking or seal-like cough and may also cause a harsh sound when a child breathes in called stridor.

Mild croup can often be managed with guidance from your pediatrician, but stridor at rest or difficulty breathing requires prompt medical evaluation.

Asthma can cause:

• recurrent coughing
• nighttime cough
• wheezing
• chest tightness
• coughing with exercise
• coughing that repeatedly appears with respiratory infections

A recurring nighttime or exercise-related cough deserves discussion with your pediatrician, particularly if there is wheezing or a history of asthma or allergies.

Environmental allergies may cause coughing along with symptoms such as:

• clear runny nose
• sneezing
• itchy nose
• watery or itchy eyes

Unlike many infections, allergies generally do not cause fever.

Pneumonia can cause cough along with fever, rapid or difficult breathing, chest discomfort, decreased energy or a child who appears significantly ill.

A pediatric examination is often necessary to determine whether pneumonia is a concern.

Bronchiolitis is a viral lower respiratory infection seen primarily in infants and young children.

It may cause cough, congestion, wheezing and increased work of breathing. Infants should be watched carefully because breathing and feeding difficulties can develop.

Pertussis, or whooping cough, can cause repeated severe coughing spells. Some children may vomit after coughing or struggle to catch their breath between episodes.

Infants can become particularly ill from pertussis and require prompt medical evaluation.

A cough that begins suddenly while a child is eating or playing with a small object deserves special attention.

A piece of food or another object may have entered the airway.

Suspected choking or an inhaled foreign object can be an emergency, especially if the child is having difficulty breathing.

For an uncomplicated cough associated with a cold, supportive care is usually the most helpful treatment.

Keeping your child well hydrated can help thin mucus and soothe an irritated throat.

Offer fluids regularly throughout the day.

Honey can help soothe coughing, particularly at bedtime.

Never give honey to a baby younger than 12 months because of the risk of infant botulism.

If nasal drainage is contributing to the cough, saline nose drops or spray may help loosen mucus.

For infants, gentle nasal suction after saline can be especially helpful before feeding and sleeping.

A cool-mist humidifier may make dry air more comfortable.

Clean the humidifier regularly according to the manufacturer's instructions to prevent mold and bacterial growth.

Secondhand smoke, vaping aerosols, fragrances and other airborne irritants can worsen coughing.

Keeping your child's environment smoke-free is particularly important when they are sick.

Do not automatically reach for an over-the-counter cough medicine.

The AAP advises that OTC cough and cold medicines are not recommended for children under age 4 unless specifically advised by their doctor. For children ages 4 to 6, they should only be used when recommended by a physician.

If you are considering medication for an older child, follow the product directions carefully and check the ingredients to avoid accidentally giving the same medication twice.

Contact your pediatrician if:

• your child is younger than 6 months and has a significant cough
• the cough is worsening instead of improving
• coughing occurs in prolonged or repeated spells
• your child is wheezing
• fever lasts more than 3 days
• fever disappears and then returns
• coughing repeatedly causes vomiting
• your child has chest pain
• coughing repeatedly occurs at night or with exercise
• the cough lasts several weeks
• your child has asthma, chronic lung disease or another condition that increases respiratory risk
• you are simply uncomfortable with how your child looks or is breathing

For a baby younger than 3 months, a rectal temperature of 100.4°F (38°C) or higher requires prompt medical evaluation.

Parents do not need to wait until every box on a checklist is met. If something about your child's breathing or behavior worries you, contact your pediatrician.

Breathing difficulty should never be ignored.

Seek immediate medical attention if your child:

• is struggling for each breath
• has ribs pulling inward with breathing
• cannot comfortably speak or cry because of breathing difficulty
• develops blue or gray lips or face
• has severe or rapidly worsening wheezing
• has a harsh breathing-in sound called stridor, particularly while resting
• is unusually difficult to wake or is not responding normally
• stops breathing or passes out
• develops significant breathing difficulty after choking on food or a small object

Severe difficulty breathing, loss of consciousness, stopped breathing, or blue coloration when the child is not coughing warrants emergency services.

When it comes to breathing, it is better to have a child evaluated than to wait for severe respiratory distress to develop.

• Most childhood coughs are caused by viral respiratory infections.
• A cough itself is a protective reflex that helps clear the airways.
• Pay attention to how your child is breathing and acting, not simply how the cough sounds.
• Fluids, nasal saline and honey for children over age 1 can help relieve symptoms.
• Avoid routinely giving young children OTC cough and cold medications.
• Persistent, worsening or recurrent coughing should be discussed with your pediatrician.
• Difficulty breathing, retractions, blue coloration or altered responsiveness requires urgent evaluation.

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Consider reading these Pediatric Parent Guide articles next:

• Barking Cough in Children: Is It Croup?
• When Should I Take My Child to Urgent Care?
• When Should I Take My Child to the ER?
• How Long Does a Cold Last in a Toddler?

• American Academy of Pediatrics / HealthyChildren.org — Cough Symptom Checker
• American Academy of Pediatrics / HealthyChildren.org — Can I Give My 5-Year-Old Over-the-Counter Cough Medicine?
• American Academy of Pediatrics / HealthyChildren.org — Cough & Cold Survival Kit: Symptom-Relief Essentials for Families
• American Academy of Pediatrics / HealthyChildren.org — Why Most Sore Throats, Coughs & Runny Noses Don't Need Antibiotics
• American Academy of Pediatrics / HealthyChildren.org — Urgent Care, ER or Pediatrician? A Parent Guide

A child's cough can sound frightening—especially at night—but the sound alone rarely tells the whole story.

Look at your child. Are they breathing comfortably? Drinking? Alert? Interacting with you?

Those observations often tell us far more than whether a cough sounds dry, wet or loud.

And when your parental instinct tells you something is different or your child seems to be working harder to breathe, call your pediatrician. You know your child better than anyone.

The information provided in this article is for educational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment. Always seek the advice of your child’s pediatrician or another qualified healthcare professional with questions or concerns about your child’s health. If you believe your child may be experiencing a medical emergency, seek immediate medical care or call 911.