Upper Respiratory Tract Infections in Children

What is upper respiratory tract infections in children?

Upper respiratory tract infections in children are infections that affect the parts of the breathing system above the lungs. The upper respiratory tract includes the nose, the sinuses (air-filled spaces in the bones of the face), the throat (pharynx), the tonsils, and the voice box (larynx). Because the middle ear connects to the back of the nose through a small tube, ear infections are often discussed alongside these illnesses.

The term covers several familiar childhood illnesses. The common cold is by far the most frequent. Others include sore throat (pharyngitis), infection of the tonsils (tonsillitis), infection of the sinuses (sinusitis), infection of the voice box (laryngitis), and croup, which is swelling of the voice box and windpipe that causes a harsh, barking cough.

These infections are extremely common. Babies, toddlers, and preschool children tend to get them most often, partly because their immune systems are still learning to recognize the many viruses that cause them, and partly because young children share toys, touch their faces frequently, and spend time close to other children. It is normal for a healthy young child to have several of these infections in a single year, especially during the colder months or after starting daycare or school. In many cases the illness is mild and clears on its own. In some cases, however, a child needs medical care, and knowing the difference is what this page aims to explain. At Acibadem, upper respiratory tract infections in children are generally assessed and managed by the Pediatrics department.

Upper respiratory tract infections in children symptoms

Upper respiratory tract infections in children symptoms vary with the child’s age, the part of the airway involved, and the germ responsible. The most commonly reported symptoms include:

• Runny or blocked nose, with clear, white, yellow, or green mucus
• Sneezing
• Cough, which may be dry or produce mucus
• Sore or scratchy throat
• Hoarse voice
• Mild to moderate fever
• Reduced appetite or difficulty feeding in babies
• Irritability, tiredness, and disturbed sleep
• Ear pain or tugging at the ears
• Swollen glands (lymph nodes) in the neck

Symptoms often follow a pattern. In a typical cold, a child may first seem tired or off their food, then develop a runny nose and sore throat, followed by a cough. Nasal mucus often starts clear and becomes thicker and colored over a few days; this color change on its own does not usually mean a bacterial infection has developed. Symptoms tend to peak in the first few days and then gradually improve, although a cough can linger for two weeks or more after the child otherwise feels well.

The pattern can point toward a particular type of infection. A sore throat with fever, painful swallowing, and swollen tonsils, but little or no cough or runny nose, may suggest a throat infection caused by bacteria. A barking cough, a hoarse voice, and a harsh noise when breathing in (called stridor) are typical of croup, and often worsen at night. Pain or pressure around the cheeks or forehead with nasal congestion lasting longer than a usual cold may suggest sinusitis. Ear pain, fever, and irritability after a cold may point to a middle ear infection.

Babies deserve special mention. They may not show obvious cold symptoms but instead feed poorly, breathe noisily, or become unusually sleepy or fussy. Because infants breathe mainly through their noses, even simple nasal congestion can make feeding and sleeping difficult.

Causes and risk factors

Upper respiratory tract infections in children causes are overwhelmingly viral. Many different viruses can be responsible, and a child may catch different viruses one after another, which is why some children seem to be ill for weeks at a time. Commonly involved viruses include:

• Rhinoviruses, the most frequent cause of the common cold
• Adenoviruses, which can cause sore throat, fever, and sometimes red eyes
• Respiratory syncytial virus (RSV), which can also affect the lower airways in infants
• Influenza (flu) viruses
• Parainfluenza viruses, a common cause of croup
• Seasonal coronaviruses and the virus that causes COVID-19
• Enteroviruses, which are more common in summer and early fall

Bacteria are a less common cause. The most important is group A streptococcus, the bacterium behind strep throat. Bacteria may also cause some sinus and middle ear infections, often as a complication that follows a viral cold. Because viruses and bacteria are treated differently, distinguishing between them is a key part of a doctor’s assessment.

These germs spread when an infected person coughs or sneezes, releasing droplets into the air, and when a child touches a contaminated surface or hand and then touches their own nose, mouth, or eyes. Children are infectious from shortly before symptoms appear until several days into the illness.

Several factors can make a child more likely to develop these infections or to have a more severe course:

• Young age, particularly under two years
• Attending daycare, nursery, or school, or having older siblings
• Exposure to tobacco smoke at home
• Living in crowded conditions
• Cold-weather months, when people spend more time indoors together
• Allergic conditions such as hay fever, which can cause nasal swelling
• Conditions that weaken the immune system, or long-term illnesses of the heart or lungs
• Being born prematurely
• Not being up to date with recommended vaccinations, such as the yearly flu vaccine

Contrary to a common belief, getting cold or wet does not itself cause these infections, although the season in which they are common overlaps with cold weather.

Diagnosis

Upper respiratory tract infections in children diagnosis is usually based on the child’s history and a physical examination rather than on tests. A doctor will typically ask when symptoms started, how they have changed, whether the child has a fever, how well the child is drinking and passing urine, and whether anyone else in the family is unwell. The doctor will then examine the child, looking in the ears with a lighted instrument called an otoscope, checking the throat and tonsils, feeling the neck for swollen glands, and listening to the chest with a stethoscope to make sure the lungs sound clear. The doctor will also assess how the child is breathing and whether they appear dehydrated.

For most colds, no tests are needed. Tests are used when the result would change treatment or when the diagnosis is uncertain. Options your doctor may consider include:

• Rapid strep test: a swab from the back of the throat that can detect group A streptococcus within minutes. It is usually only done when the symptom pattern suggests a bacterial throat infection.
• Throat culture: a swab sent to a laboratory to grow bacteria, sometimes used to confirm a negative rapid test in children.
• Viral swab tests: nose or throat swabs for influenza, RSV, or COVID-19, which may be used when the result affects treatment, hospital infection control, or public health reporting.
• Pulse oximetry: a small, painless clip on the finger or toe that measures oxygen levels in the blood, used if a child is breathing hard.
• Blood tests: occasionally used if a child is very unwell, to look for signs of a more serious infection.
• Chest X-ray: not needed for a simple upper respiratory infection, but sometimes used if the doctor suspects the infection has spread to the lungs.

Imaging of the sinuses is rarely helpful in children with uncomplicated symptoms and is generally reserved for suspected complications or repeated problems. In many cases the diagnosis is clinical, meaning it rests on what the doctor sees and hears, and the main goal of the visit is to rule out something more serious such as pneumonia or a severe throat infection.

Treatment options

Upper respiratory tract infections in children treatment focuses on comfort and support while the child’s own immune system clears the infection. Because most of these infections are caused by viruses, antibiotics do not help in the majority of cases and can cause side effects such as diarrhea and rash, as well as contributing to antibiotic resistance.

Supportive care that parents can usually provide at home includes:

• Offering plenty of fluids to prevent dehydration; breast milk or formula for babies, water for older children
• Encouraging rest, while allowing normal activity if the child feels up to it
• Saline (salt water) nose drops or spray, followed by gentle suction with a bulb syringe in babies, to loosen and clear mucus
• Keeping the air moist with a cool-mist humidifier, cleaned regularly
• Honey to soothe a cough in children over one year of age; honey should never be given to infants under one year because of the risk of botulism
• Raising the head of an older child’s bed slightly to ease nighttime congestion

For fever or discomfort, your doctor or pharmacist may suggest acetaminophen or ibuprofen at a dose based on the child’s weight and age. Ibuprofen is generally not given to very young infants without medical advice. Aspirin should not be given to children because of its link to a rare but serious condition called Reye’s syndrome. Over-the-counter cough and cold medicines are not recommended for young children, as they have not been shown to help and can cause harm.

Antibiotics are reserved for infections a doctor believes are bacterial, such as confirmed strep throat, some middle ear infections, and sinusitis that is severe or persistent. For some ear infections in otherwise healthy children, a doctor may recommend a period of watchful waiting, with pain relief, before deciding whether antibiotics are needed. If antibiotics are prescribed, it is important to finish the course as directed.

Some specific infections have specific treatments. Croup is often treated with a single dose of a corticosteroid medicine to reduce airway swelling, and children with more severe breathing difficulty may be given an inhaled medicine in the emergency department. Children with influenza who are very unwell or at high risk of complications may be offered an antiviral medicine, which works best when started early.

Procedures and surgery are rarely part of treating a single infection. However, a specialist may discuss removing the tonsils (tonsillectomy) or the adenoids (adenoidectomy) for children with frequent, severe throat infections, or placing small drainage tubes in the eardrums for children with repeated or persistent middle ear infections. These decisions are individual and weigh the burden of the infections against the risks of surgery.

A small number of children need hospital care, usually because of breathing difficulty, dehydration, very young age with high fever, or an underlying condition. Hospital treatment may include oxygen, fluids given through a vein, and close monitoring.

Living with upper respiratory tract infections in children and outlook

The outlook for most children with an upper respiratory tract infection is good. A typical cold improves over about a week to ten days, although some symptoms, particularly cough and a runny nose, can last longer. Children usually return to normal activity as soon as they feel well and their fever has settled, in line with the rules of their daycare or school.

Complications are uncommon but can occur. The most frequent are middle ear infections and sinusitis, which develop when a cold blocks the drainage of the ears or sinuses. Less often, a viral infection can spread to the lower airways and cause bronchiolitis or pneumonia, or trigger wheezing in children who have asthma. Untreated strep throat carries a small risk of rarer complications, which is one reason bacterial throat infections are treated with antibiotics.

Frequent infections can be exhausting for families, and many parents worry that repeated colds signal a problem with the child’s immune system. In the large majority of cases they do not; repeated mild infections are a normal part of early childhood and tend to become less frequent as children grow. Your doctor may look further if infections are unusually severe, keep needing hospital care, are accompanied by poor growth, or affect unusual sites in the body.

Simple measures can reduce how often infections occur and spread within a household: regular hand washing, teaching children to cough or sneeze into a tissue or elbow, avoiding tobacco smoke, keeping vaccinations up to date, and cleaning frequently touched surfaces. No measure prevents every infection, but these steps are widely recommended.

Frequently asked questions

How long do upper respiratory tract infections in children usually last?

Most simple colds in children improve within about seven to ten days, though a cough may continue for two to three weeks. Fever usually settles within the first few days. If a fever lasts more than a few days, symptoms worsen after initially improving, or the child seems more unwell rather than better, it is reasonable to seek medical advice, as this can signal a complication.

What are the earliest upper respiratory tract infections in children symptoms to watch for?

Early signs are often subtle: a child may be more tired or clingy than usual, eat less, or sleep poorly before a runny nose, sneezing, or sore throat appears. In babies, difficulty feeding and noisy breathing may be the first clues. These early symptoms overlap with many childhood illnesses, so they are not specific to any one infection.

Are upper respiratory tract infections in children causes mostly viral or bacterial?

The great majority are caused by viruses, which is why antibiotics are not usually needed. Bacteria, most often group A streptococcus, cause a smaller share, mainly throat infections, and can also be involved in some ear and sinus infections that follow a cold. A doctor’s examination, sometimes with a throat swab, helps tell the two apart.

Does upper respiratory tract infections in children treatment always require antibiotics?

No. Because most of these infections are viral, antibiotics do not shorten the illness and may cause side effects. Treatment usually centers on fluids, rest, nasal saline, and pain or fever relief when needed. Antibiotics are reserved for infections a doctor judges to be bacterial, such as confirmed strep throat or certain ear and sinus infections.

How is upper respiratory tract infections in children diagnosis made without tests?

Doctors rely on the story of the illness and a careful examination of the ears, nose, throat, neck, and chest. This is often enough to confirm a viral cold and to rule out more serious problems. Tests such as a rapid strep swab or viral swabs are added only when the result would change how the child is treated.

Can children go to daycare or school with an upper respiratory infection?

Policies vary, but children are generally kept home while they have a fever, are too unwell to take part in normal activities, or cannot manage their own coughing and nose blowing well enough to limit spread. Once the fever has gone and the child feels well, a lingering mild cough or runny nose alone is often not a reason to stay home, though it is best to follow the setting’s guidance.

Why does my child get so many upper respiratory infections?

Young children encounter many viruses for the first time, and each one can cause a separate illness. Daycare, siblings, and the winter season all increase exposure. Several colds a year is normal in early childhood and usually becomes less frequent with age. Your doctor may investigate further only if infections are unusually severe or the child is not growing and developing as expected.

When to see a doctor

Most upper respiratory tract infections in children can be managed at home, but some signs mean a child should be assessed promptly. Seek urgent medical care if your child has any of the following:

• Difficulty breathing, fast breathing, grunting, flaring nostrils, or the skin pulling in between the ribs or below the neck with each breath
• A bluish or gray color of the lips, tongue, or face
• A harsh noise when breathing in (stridor) that is present even at rest, or drooling with an inability to swallow
• Signs of dehydration, such as very few wet diapers, no tears when crying, a dry mouth, or a sunken soft spot on a baby’s head
• Fever in a baby under three months of age
• A fever that is very high, lasts more than a few days, or returns after the child had improved
• Unusual drowsiness, difficulty waking, floppiness, or inconsolable crying
• A rash that does not fade when pressed, a stiff neck, or a severe headache
• Ear pain that is severe, or fluid or pus draining from the ear
• Symptoms that are getting worse after the first week rather than better

You should also arrange a routine appointment if your child has a sore throat with fever but no cold symptoms, if a cough lasts more than a few weeks, if congestion and facial pain continue well beyond a usual cold, or if your child has a long-term condition such as asthma, heart disease, or a weakened immune system and develops a respiratory infection. Parents know their children best; if you are worried, it is always reasonable to have a doctor take a look.